mirror of https://referencesource.org/workplace-exposure-limits/

README.md

@@ -1,5 +1,5 @@
 ---
-pretty_name: "US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
+pretty_name: "US workplace chemical exposure limits: federal OSHA, Cal/OSHA and NIOSH, side by side"
 license: other
 license_name: source-terms-cited
 license_link: https://referencesource.org/workplace-exposure-limits/
@@ -15,17 +15,17 @@ configs:
   - split: train
     path: data/records.jsonl
 ---
-# US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side
+# US workplace chemical exposure limits: federal OSHA, Cal/OSHA and NIOSH, side by side
 
 **Canonical, always-current version: https://referencesource.org/workplace-exposure-limits/**
 Machine-readable: https://referencesource.org/workplace-exposure-limits/data.json — this mirror is a point-in-time copy.
 
-- **Last verified:** 2026-08-05
-- **Stale after:** 2027-08-05 (past this date, prefer the canonical copy —
+- **Last verified:** 2026-09-25
+- **Stale after:** 2027-09-25 (past this date, prefer the canonical copy —
   it re-verifies on a cadence this snapshot does not)
-- **Records:** 886
+- **Records:** 812
 
-Airborne exposure limits for workplace chemicals as stated by two independent authorities: federal OSHA's Table Z-1 (29 CFR 1910.1000) and California's own Table AC-1 (8 CCR 5155). Each record is one substance with the permissible exposure limit that agency publishes for it, the URL it came from and the verbatim table row it was read from. **The product is the disagreement**: where both regulate the same substance California is frequently stricter — acetaldehyde 200 ppm federally against 25 ppm in California, 1,1-dimethylhydrazine 0.5 against 0.01 — and exceeding a PEL is what triggers engineering controls, PPE and medical surveillance, so which number applies is consequential. Answers 'what is the exposure limit for [chemical]?', 'is the California PEL different from OSHA's?' and 'what is the PEL for acetone' — the questions where an assistant gives one number without saying whose it is.
+Airborne exposure limits for workplace chemicals as stated by three independent authorities: federal OSHA's Table Z-1 (29 CFR 1910.1000), California's own Table AC-1 (8 CCR 5155), and NIOSH's Pocket Guide entry for the substance. Each record is one substance with the limit that agency publishes for it, the URL it came from and the verbatim line it was read from. **The product is the disagreement**: where more than one of them covers a substance the numbers are frequently far apart — acetone is 1000 ppm federally, 500 ppm in California and 250 ppm recommended by NIOSH; acetaldehyde is 200 ppm federally against 25 ppm in California; 1,1-dimethylhydrazine 0.5 against 0.01 — and exceeding a PEL is what triggers engineering controls, PPE and medical surveillance, so which number applies is consequential. OSHA's and California's are legal limits (PELs); NIOSH's is a recommendation (an REL), which is why it is carried in its own fields and never mixed into the PEL columns. Answers 'what is the exposure limit for [chemical]?', 'is the California PEL different from OSHA's?', 'what is the NIOSH REL for acetone' — the questions where an assistant gives one number without saying whose it is, or hands back an REL when it was asked for the legal limit.
 
 ## Provenance — what every record carries
 
@@ -37,7 +37,7 @@ the canonical site at its `url`.
 
 ## Licence position
 
-US and California government works — public domain. ACGIH TLVs deliberately excluded (copyrighted). NIOSH RELs excluded: obtainable only second-hand.
+US federal and California government works — public domain. ACGIH TLVs deliberately excluded (copyrighted).
 
 Facts are not copyrightable; what this dataset takes from each source is a
 fact plus a short attributed quote linking back to the page that states it.
@@ -46,6 +46,653 @@ fact plus a short attributed quote linking back to the page that states it.
 
 - https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
 - https://www.dir.ca.gov/title8/5155.html
+- https://www.cdc.gov/niosh/npg/npgd0595.html
+- https://www.cdc.gov/niosh/npg/npgd0597.html
+- https://www.cdc.gov/niosh/npg/npgd0596.html
+- https://www.cdc.gov/niosh/npg/npgd0598.html
+- https://www.cdc.gov/niosh/npg/npgd0632.html
+- https://www.cdc.gov/niosh/npg/npgd0628.html
+- https://www.cdc.gov/niosh/npg/npgd0198.html
+- https://www.cdc.gov/niosh/npg/npgd0194.html
+- https://www.cdc.gov/niosh/npg/npgd0227.html
+- https://www.cdc.gov/niosh/npg/npgd0631.html
+- https://www.cdc.gov/niosh/npg/npgd0637.html
+- https://www.cdc.gov/niosh/npg/npgd0627.html
+- https://www.cdc.gov/niosh/npg/npgd0638.html
+- https://www.cdc.gov/niosh/npg/npgd0184.html
+- https://www.cdc.gov/niosh/npg/npgd0195.html
+- https://www.cdc.gov/niosh/npg/npgd0201.html
+- https://www.cdc.gov/niosh/npg/npgd0639.html
+- https://www.cdc.gov/niosh/npg/npgd0067.html
+- https://www.cdc.gov/niosh/npg/npgd0193.html
+- https://www.cdc.gov/niosh/npg/npgd0199.html
+- https://www.cdc.gov/niosh/npg/npgd0130.html
+- https://www.cdc.gov/niosh/npg/npgd0176.html
+- https://www.cdc.gov/niosh/npg/npgd0249.html
+- https://www.cdc.gov/niosh/npg/npgd0313.html
+- https://www.cdc.gov/niosh/npg/npgd0318.html
+- https://www.cdc.gov/niosh/npg/npgd0459.html
+- https://www.cdc.gov/niosh/npg/npgd0467.html
+- https://www.cdc.gov/niosh/npg/npgd0469.html
+- https://www.cdc.gov/niosh/npg/npgd0471.html
+- https://www.cdc.gov/niosh/npg/npgd0487.html
+- https://www.cdc.gov/niosh/npg/npgd0526.html
+- https://www.cdc.gov/niosh/npg/npgd0649.html
+- https://www.cdc.gov/niosh/npg/npgd0200.html
+- https://www.cdc.gov/niosh/npg/npgd0594.html
+- https://www.cdc.gov/niosh/npg/npgd0583.html
+- https://www.cdc.gov/niosh/npg/npgd0641.html
+- https://www.cdc.gov/niosh/npg/npgd0173.html
+- https://www.cdc.gov/niosh/npg/npgd0179.html
+- https://www.cdc.gov/niosh/npg/npgd0235.html
+- https://www.cdc.gov/niosh/npg/npgd0246.html
+- https://www.cdc.gov/niosh/npg/npgd0007.html
+- https://www.cdc.gov/niosh/npg/npgd0026.html
+- https://www.cdc.gov/niosh/npg/npgd0069.html
+- https://www.cdc.gov/niosh/npg/npgd0070.html
+- https://www.cdc.gov/niosh/npg/npgd0071.html
+- https://www.cdc.gov/niosh/npg/npgd0136.html
+- https://www.cdc.gov/niosh/npg/npgd0210.html
+- https://www.cdc.gov/niosh/npg/npgd0258.html
+- https://www.cdc.gov/niosh/npg/npgd0259.html
+- https://www.cdc.gov/niosh/npg/npgd0325.html
+- https://www.cdc.gov/niosh/npg/npgd0339.html
+- https://www.cdc.gov/niosh/npg/npgd0357.html
+- https://www.cdc.gov/niosh/npg/npgd0401.html
+- https://www.cdc.gov/niosh/npg/npgd0402.html
+- https://www.cdc.gov/niosh/npg/npgd0409.html
+- https://www.cdc.gov/niosh/npg/npgd0185.html
+- https://www.cdc.gov/niosh/npg/npgd0458.html
+- https://www.cdc.gov/niosh/npg/npgd0460.html
+- https://www.cdc.gov/niosh/npg/npgd0488.html
+- https://www.cdc.gov/niosh/npg/npgd0191.html
+- https://www.cdc.gov/niosh/npg/npgd0411.html
+- https://www.cdc.gov/niosh/npg/npgd0415.html
+- https://www.cdc.gov/niosh/npg/npgd0609.html
+- https://www.cdc.gov/niosh/npg/npgd0234.html
+- https://www.cdc.gov/niosh/npg/npgd0025.html
+- https://www.cdc.gov/niosh/npg/npgd0220.html
+- https://www.cdc.gov/niosh/npg/npgd0390.html
+- https://www.cdc.gov/niosh/npg/npgd0451.html
+- https://www.cdc.gov/niosh/npg/npgd0418.html
+- https://www.cdc.gov/niosh/npg/npgd0119.html
+- https://www.cdc.gov/niosh/npg/npgd0001.html
+- https://www.cdc.gov/niosh/npg/npgd0002.html
+- https://www.cdc.gov/niosh/npg/npgd0003.html
+- https://www.cdc.gov/niosh/npg/npgd0004.html
+- https://www.cdc.gov/niosh/npg/npgd0005.html
+- https://www.cdc.gov/niosh/npg/npgd0006.html
+- https://www.cdc.gov/niosh/npg/npgd0008.html
+- https://www.cdc.gov/niosh/npg/npgd0009.html
+- https://www.cdc.gov/niosh/npg/npgd0010.html
+- https://www.cdc.gov/niosh/npg/npgd0011.html
+- https://www.cdc.gov/niosh/npg/npgd0012.html
+- https://www.cdc.gov/niosh/npg/npgd0013.html
+- https://www.cdc.gov/niosh/npg/npgd0014.html
+- https://www.cdc.gov/niosh/npg/npgd0015.html
+- https://www.cdc.gov/niosh/npg/npgd0016.html
+- https://www.cdc.gov/niosh/npg/npgd0017.html
+- https://www.cdc.gov/niosh/npg/npgd0018.html
+- https://www.cdc.gov/niosh/npg/npgd0019.html
+- https://www.cdc.gov/niosh/npg/npgd0020.html
+- https://www.cdc.gov/niosh/npg/npgd0021.html
+- https://www.cdc.gov/niosh/npg/npgd0429.html
+- https://www.cdc.gov/niosh/npg/npgd0395.html
+- https://www.cdc.gov/niosh/npg/npgd0441.html
+- https://www.cdc.gov/niosh/npg/npgd0022.html
+- https://www.cdc.gov/niosh/npg/npgd0027.html
+- https://www.cdc.gov/niosh/npg/npgd0028.html
+- https://www.cdc.gov/niosh/npg/npgd0029.html
+- https://www.cdc.gov/niosh/npg/npgd0030.html
+- https://www.cdc.gov/niosh/npg/npgd0033.html
+- https://www.cdc.gov/niosh/npg/npgd0036.html
+- https://www.cdc.gov/niosh/npg/npgd0037.html
+- https://www.cdc.gov/niosh/npg/npgd0038.html
+- https://www.cdc.gov/niosh/npg/npgd0040.html
+- https://www.cdc.gov/niosh/npg/npgd0041.html
+- https://www.cdc.gov/niosh/npg/npgd0042.html
+- https://www.cdc.gov/niosh/npg/npgd0043.html
+- https://www.cdc.gov/niosh/npg/npgd0681.html
+- https://www.cdc.gov/niosh/npg/npgd0045.html
+- https://www.cdc.gov/niosh/npg/npgd0046.html
+- https://www.cdc.gov/niosh/npg/npgd0047.html
+- https://www.cdc.gov/niosh/npg/npgd0048.html
+- https://www.cdc.gov/niosh/npg/npgd0049.html
+- https://www.cdc.gov/niosh/npg/npgd0050.html
+- https://www.cdc.gov/niosh/npg/npgd0051.html
+- https://www.cdc.gov/niosh/npg/npgd0052.html
+- https://www.cdc.gov/niosh/npg/npgd0053.html
+- https://www.cdc.gov/niosh/npg/npgd0054.html
+- https://www.cdc.gov/niosh/npg/npgd0133.html
+- https://www.cdc.gov/niosh/npg/npgd0442.html
+- https://www.cdc.gov/niosh/npg/npgd0528.html
+- https://www.cdc.gov/niosh/npg/npgd0239.html
+- https://www.cdc.gov/niosh/npg/npgd0221.html
+- https://www.cdc.gov/niosh/npg/npgd0128.html
+- https://www.cdc.gov/niosh/npg/npgd0056.html
+- https://www.cdc.gov/niosh/npg/npgd0057.html
+- https://www.cdc.gov/niosh/npg/npgd0058.html
+- https://www.cdc.gov/niosh/npg/npgd0059.html
+- https://www.cdc.gov/niosh/npg/npgd0060.html
+- https://www.cdc.gov/niosh/npg/npgd0061.html
+- https://www.cdc.gov/niosh/npg/npgd0062.html
+- https://www.cdc.gov/niosh/npg/npgd0063.html
+- https://www.cdc.gov/niosh/npg/npgd0064.html
+- https://www.cdc.gov/niosh/npg/npgd0065.html
+- https://www.cdc.gov/niosh/npg/npgd0066.html
+- https://www.cdc.gov/niosh/npg/npgd0068.html
+- https://www.cdc.gov/niosh/npg/npgd0075.html
+- https://www.cdc.gov/niosh/npg/npgd0083.html
+- https://www.cdc.gov/niosh/npg/npgd0079.html
+- https://www.cdc.gov/niosh/npg/npgd0087.html
+- https://www.cdc.gov/niosh/npg/npgd0088.html
+- https://www.cdc.gov/niosh/npg/npgd0089.html
+- https://www.cdc.gov/niosh/npg/npgd0090.html
+- https://www.cdc.gov/niosh/npg/npgd0091.html
+- https://www.cdc.gov/niosh/npg/npgd0092.html
+- https://www.cdc.gov/niosh/npg/npgd0093.html
+- https://www.cdc.gov/niosh/npg/npgd0094.html
+- https://www.cdc.gov/niosh/npg/npgd0095.html
+- https://www.cdc.gov/niosh/npg/npgd0096.html
+- https://www.cdc.gov/niosh/npg/npgd0097.html
+- https://www.cdc.gov/niosh/npg/npgd0098.html
+- https://www.cdc.gov/niosh/npg/npgd0099.html
+- https://www.cdc.gov/niosh/npg/npgd0100.html
+- https://www.cdc.gov/niosh/npg/npgd0101.html
+- https://www.cdc.gov/niosh/npg/npgd0102.html
+- https://www.cdc.gov/niosh/npg/npgd0103.html
+- https://www.cdc.gov/niosh/npg/npgd0104.html
+- https://www.cdc.gov/niosh/npg/npgd0105.html
+- https://www.cdc.gov/niosh/npg/npgd0106.html
+- https://www.cdc.gov/niosh/npg/npgd0107.html
+- https://www.cdc.gov/niosh/npg/npgd0108.html
+- https://www.cdc.gov/niosh/npg/npgd0109.html
+- https://www.cdc.gov/niosh/npg/npgd0110.html
+- https://www.cdc.gov/niosh/npg/npgd0111.html
+- https://www.cdc.gov/niosh/npg/npgd0112.html
+- https://www.cdc.gov/niosh/npg/npgd0113.html
+- https://www.cdc.gov/niosh/npg/npgd0115.html
+- https://www.cdc.gov/niosh/npg/npgd0116.html
+- https://www.cdc.gov/niosh/npg/npgd0117.html
+- https://www.cdc.gov/niosh/npg/npgd0118.html
+- https://www.cdc.gov/niosh/npg/npgd0120.html
+- https://www.cdc.gov/niosh/npg/npgd0121.html
+- https://www.cdc.gov/niosh/npg/npgd0123.html
+- https://www.cdc.gov/niosh/npg/npgd0124.html
+- https://www.cdc.gov/niosh/npg/npgd0125.html
+- https://www.cdc.gov/niosh/npg/npgd0126.html
+- https://www.cdc.gov/niosh/npg/npgd0127.html
+- https://www.cdc.gov/niosh/npg/npgd0129.html
+- https://www.cdc.gov/niosh/npg/npgd0131.html
+- https://www.cdc.gov/niosh/npg/npgd0132.html
+- https://www.cdc.gov/niosh/npg/npgd0137.html
+- https://www.cdc.gov/niosh/npg/npgd0138.html
+- https://www.cdc.gov/niosh/npg/npgd0141.html
+- https://www.cdc.gov/niosh/npg/npgd0142.html
+- https://www.cdc.gov/niosh/npg/npgd0143.html
+- https://www.cdc.gov/niosh/npg/npgd0145.html
+- https://www.cdc.gov/niosh/npg/npgd0147.html
+- https://www.cdc.gov/niosh/npg/npgd0148.html
+- https://www.cdc.gov/niosh/npg/npgd0146.html
+- https://www.cdc.gov/niosh/npg/npgd0150.html
+- https://www.cdc.gov/niosh/npg/npgd0151.html
+- https://www.cdc.gov/niosh/npg/npgd0153.html
+- https://www.cdc.gov/niosh/npg/npgd0157.html
+- https://www.cdc.gov/niosh/npg/npgd0158.html
+- https://www.cdc.gov/niosh/npg/npgd0159.html
+- https://www.cdc.gov/niosh/npg/npgd0160.html
+- https://www.cdc.gov/niosh/npg/npgd0161.html
+- https://www.cdc.gov/niosh/npg/npgd0162.html
+- https://www.cdc.gov/niosh/npg/npgd0163.html
+- https://www.cdc.gov/niosh/npg/npgd0164.html
+- https://www.cdc.gov/niosh/npg/npgd0165.html
+- https://www.cdc.gov/niosh/npg/npgd0166.html
+- https://www.cdc.gov/niosh/npg/npgd0167.html
+- https://www.cdc.gov/niosh/npg/npgd0168.html
+- https://www.cdc.gov/niosh/npg/npgd0169.html
+- https://www.cdc.gov/niosh/npg/npgd0170.html
+- https://www.cdc.gov/niosh/npg/npgd0171.html
+- https://www.cdc.gov/niosh/npg/npgd0172.html
+- https://www.cdc.gov/niosh/npg/npgd0174.html
+- https://www.cdc.gov/niosh/npg/npgd0175.html
+- https://www.cdc.gov/niosh/npg/npgd0177.html
+- https://www.cdc.gov/niosh/npg/npgd0236.html
+- https://www.cdc.gov/niosh/npg/npgd0178.html
+- https://www.cdc.gov/niosh/npg/npgd0181.html
+- https://www.cdc.gov/niosh/npg/npgd0182.html
+- https://www.cdc.gov/niosh/npg/npgd0183.html
+- https://www.cdc.gov/niosh/npg/npgd0186.html
+- https://www.cdc.gov/niosh/npg/npgd0187.html
+- https://www.cdc.gov/niosh/npg/npgd0188.html
+- https://www.cdc.gov/niosh/npg/npgd0192.html
+- https://www.cdc.gov/niosh/npg/npgd0196.html
+- https://www.cdc.gov/niosh/npg/npgd0197.html
+- https://www.cdc.gov/niosh/npg/npgd0202.html
+- https://www.cdc.gov/niosh/npg/npgd0203.html
+- https://www.cdc.gov/niosh/npg/npgd0204.html
+- https://www.cdc.gov/niosh/npg/npgd0205.html
+- https://www.cdc.gov/niosh/npg/npgd0206.html
+- https://www.cdc.gov/niosh/npg/npgd0208.html
+- https://www.cdc.gov/niosh/npg/npgd0212.html
+- https://www.cdc.gov/niosh/npg/npgd0213.html
+- https://www.cdc.gov/niosh/npg/npgd0209.html
+- https://www.cdc.gov/niosh/npg/npgd0211.html
+- https://www.cdc.gov/niosh/npg/npgd0214.html
+- https://www.cdc.gov/niosh/npg/npgd0215.html
+- https://www.cdc.gov/niosh/npg/npgd0216.html
+- https://www.cdc.gov/niosh/npg/npgd0217.html
+- https://www.cdc.gov/niosh/npg/npgd0225.html
+- https://www.cdc.gov/niosh/npg/npgd0218.html
+- https://www.cdc.gov/niosh/npg/npgd0224.html
+- https://www.cdc.gov/niosh/npg/npgd0228.html
+- https://www.cdc.gov/niosh/npg/npgd0229.html
+- https://www.cdc.gov/niosh/npg/npgd0219.html
+- https://www.cdc.gov/niosh/npg/npgd0222.html
+- https://www.cdc.gov/niosh/npg/npgd0223.html
+- https://www.cdc.gov/niosh/npg/npgd0226.html
+- https://www.cdc.gov/niosh/npg/npgd0230.html
+- https://www.cdc.gov/niosh/npg/npgd0237.html
+- https://www.cdc.gov/niosh/npg/npgd0238.html
+- https://www.cdc.gov/niosh/npg/npgd0240.html
+- https://www.cdc.gov/niosh/npg/npgd0242.html
+- https://www.cdc.gov/niosh/npg/npgd0241.html
+- https://www.cdc.gov/niosh/npg/npgd0243.html
+- https://www.cdc.gov/niosh/npg/npgd0244.html
+- https://www.cdc.gov/niosh/npg/npgd0245.html
+- https://www.cdc.gov/niosh/npg/npgd0247.html
+- https://www.cdc.gov/niosh/npg/npgd0248.html
+- https://www.cdc.gov/niosh/npg/npgd0250.html
+- https://www.cdc.gov/niosh/npg/npgd0251.html
+- https://www.cdc.gov/niosh/npg/npgd0252.html
+- https://www.cdc.gov/niosh/npg/npgd0253.html
+- https://www.cdc.gov/niosh/npg/npgd0254.html
+- https://www.cdc.gov/niosh/npg/npgd0255.html
+- https://www.cdc.gov/niosh/npg/npgd0256.html
+- https://www.cdc.gov/niosh/npg/npgd0257.html
+- https://www.cdc.gov/niosh/npg/npgd0260.html
+- https://www.cdc.gov/niosh/npg/npgd0261.html
+- https://www.cdc.gov/niosh/npg/npgd0262.html
+- https://www.cdc.gov/niosh/npg/npgd0264.html
+- https://www.cdc.gov/niosh/npg/npgd0265.html
+- https://www.cdc.gov/niosh/npg/npgd0266.html
+- https://www.cdc.gov/niosh/npg/npgd0267.html
+- https://www.cdc.gov/niosh/npg/npgd0277.html
+- https://www.cdc.gov/niosh/npg/npgd0278.html
+- https://www.cdc.gov/niosh/npg/npgd0280.html
+- https://www.cdc.gov/niosh/npg/npgd0282.html
+- https://www.cdc.gov/niosh/npg/npgd0263.html
+- https://www.cdc.gov/niosh/npg/npgd0268.html
+- https://www.cdc.gov/niosh/npg/npgd0270.html
+- https://www.cdc.gov/niosh/npg/npgd0271.html
+- https://www.cdc.gov/niosh/npg/npgd0272.html
+- https://www.cdc.gov/niosh/npg/npgd0273.html
+- https://www.cdc.gov/niosh/npg/npgd0275.html
+- https://www.cdc.gov/niosh/npg/npgd0276.html
+- https://www.cdc.gov/niosh/npg/npgd0269.html
+- https://www.cdc.gov/niosh/npg/npgd0274.html
+- https://www.cdc.gov/niosh/npg/npgd0279.html
+- https://www.cdc.gov/niosh/npg/npgd0283.html
+- https://www.cdc.gov/niosh/npg/npgd0284.html
+- https://www.cdc.gov/niosh/npg/npgd0285.html
+- https://www.cdc.gov/niosh/npg/npgd0286.html
+- https://www.cdc.gov/niosh/npg/npgd0287.html
+- https://www.cdc.gov/niosh/npg/npgd0289.html
+- https://www.cdc.gov/niosh/npg/npgd0290.html
+- https://www.cdc.gov/niosh/npg/npgd0291.html
+- https://www.cdc.gov/niosh/npg/npgd0292.html
+- https://www.cdc.gov/niosh/npg/npgd0293.html
+- https://www.cdc.gov/niosh/npg/npgd0295.html
+- https://www.cdc.gov/niosh/npg/npgd0296.html
+- https://www.cdc.gov/niosh/npg/npgd0297.html
+- https://www.cdc.gov/niosh/npg/npgd0298.html
+- https://www.cdc.gov/niosh/npg/npgd0299.html
+- https://www.cdc.gov/niosh/npg/npgd0300.html
+- https://www.cdc.gov/niosh/npg/npgd0301.html
+- https://www.cdc.gov/niosh/npg/npgd0302.html
+- https://www.cdc.gov/niosh/npg/npgd0303.html
+- https://www.cdc.gov/niosh/npg/npgd0304.html
+- https://www.cdc.gov/niosh/npg/npgd0306.html
+- https://www.cdc.gov/niosh/npg/npgd0307.html
+- https://www.cdc.gov/niosh/npg/npgd0308.html
+- https://www.cdc.gov/niosh/npg/npgd0309.html
+- https://www.cdc.gov/niosh/npg/npgd0310.html
+- https://www.cdc.gov/niosh/npg/npgd0311.html
+- https://www.cdc.gov/niosh/npg/npgd0312.html
+- https://www.cdc.gov/niosh/npg/npgd0314.html
+- https://www.cdc.gov/niosh/npg/npgd0315.html
+- https://www.cdc.gov/niosh/npg/npgd0316.html
+- https://www.cdc.gov/niosh/npg/npgd0317.html
+- https://www.cdc.gov/niosh/npg/npgd0319.html
+- https://www.cdc.gov/niosh/npg/npgd0321.html
+- https://www.cdc.gov/niosh/npg/npgd0320.html
+- https://www.cdc.gov/niosh/npg/npgd0326.html
+- https://www.cdc.gov/niosh/npg/npgd0328.html
+- https://www.cdc.gov/niosh/npg/npgd0329.html
+- https://www.cdc.gov/niosh/npg/npgd0331.html
+- https://www.cdc.gov/niosh/npg/npgd0332.html
+- https://www.cdc.gov/niosh/npg/npgd0333.html
+- https://www.cdc.gov/niosh/npg/npgd0334.html
+- https://www.cdc.gov/niosh/npg/npgd0335.html
+- https://www.cdc.gov/niosh/npg/npgd0336.html
+- https://www.cdc.gov/niosh/npg/npgd0337.html
+- https://www.cdc.gov/niosh/npg/npgd0330.html
+- https://www.cdc.gov/niosh/npg/npgd0338.html
+- https://www.cdc.gov/niosh/npg/npgd0340.html
+- https://www.cdc.gov/niosh/npg/npgd0341.html
+- https://www.cdc.gov/niosh/npg/npgd0342.html
+- https://www.cdc.gov/niosh/npg/npgd0343.html
+- https://www.cdc.gov/niosh/npg/npgd0344.html
+- https://www.cdc.gov/niosh/npg/npgd0549.html
+- https://www.cdc.gov/niosh/npg/npgd0345.html
+- https://www.cdc.gov/niosh/npg/npgd0347.html
+- https://www.cdc.gov/niosh/npg/npgd0348.html
+- https://www.cdc.gov/niosh/npg/npgd0349.html
+- https://www.cdc.gov/niosh/npg/npgd0350.html
+- https://www.cdc.gov/niosh/npg/npgd0351.html
+- https://www.cdc.gov/niosh/npg/npgd0352.html
+- https://www.cdc.gov/niosh/npg/npgd0353.html
+- https://www.cdc.gov/niosh/npg/npgd0354.html
+- https://www.cdc.gov/niosh/npg/npgd0355.html
+- https://www.cdc.gov/niosh/npg/npgd0356.html
+- https://www.cdc.gov/niosh/npg/npgd0358.html
+- https://www.cdc.gov/niosh/npg/npgd0359.html
+- https://www.cdc.gov/niosh/npg/npgd0362.html
+- https://www.cdc.gov/niosh/npg/npgd0363.html
+- https://www.cdc.gov/niosh/npg/npgd0360.html
+- https://www.cdc.gov/niosh/npg/npgd0364.html
+- https://www.cdc.gov/niosh/npg/npgd0365.html
+- https://www.cdc.gov/niosh/npg/npgd0366.html
+- https://www.cdc.gov/niosh/npg/npgd0367.html
+- https://www.cdc.gov/niosh/npg/npgd0679.html
+- https://www.cdc.gov/niosh/npg/npgd0368.html
+- https://www.cdc.gov/niosh/npg/npgd0369.html
+- https://www.cdc.gov/niosh/npg/npgd0370.html
+- https://www.cdc.gov/niosh/npg/npgd0371.html
+- https://www.cdc.gov/niosh/npg/npgd0155.html
+- https://www.cdc.gov/niosh/npg/npgd0232.html
+- https://www.cdc.gov/niosh/npg/npgd0463.html
+- https://www.cdc.gov/niosh/npg/npgd0513.html
+- https://www.cdc.gov/niosh/npg/npgd0592.html
+- https://www.cdc.gov/niosh/npg/npgd0623.html
+- https://www.cdc.gov/niosh/npg/npgd0669.html
+- https://www.cdc.gov/niosh/npg/npgd0671.html
+- https://www.cdc.gov/niosh/npg/npgd0373.html
+- https://www.cdc.gov/niosh/npg/npgd0374.html
+- https://www.cdc.gov/niosh/npg/npgd0375.html
+- https://www.cdc.gov/niosh/npg/npgd0376.html
+- https://www.cdc.gov/niosh/npg/npgd0377.html
+- https://www.cdc.gov/niosh/npg/npgd0378.html
+- https://www.cdc.gov/niosh/npg/npgd0379.html
+- https://www.cdc.gov/niosh/npg/npgd0380.html
+- https://www.cdc.gov/niosh/npg/npgd0381.html
+- https://www.cdc.gov/niosh/npg/npgd0382.html
+- https://www.cdc.gov/niosh/npg/npgd0383.html
+- https://www.cdc.gov/niosh/npg/npgd0385.html
+- https://www.cdc.gov/niosh/npg/npgd0386.html
+- https://www.cdc.gov/niosh/npg/npgd0387.html
+- https://www.cdc.gov/niosh/npg/npgd0388.html
+- https://www.cdc.gov/niosh/npg/npgd0389.html
+- https://www.cdc.gov/niosh/npg/npgd0405.html
+- https://www.cdc.gov/niosh/npg/npgd0391.html
+- https://www.cdc.gov/niosh/npg/npgd0392.html
+- https://www.cdc.gov/niosh/npg/npgd0393.html
+- https://www.cdc.gov/niosh/npg/npgd0394.html
+- https://www.cdc.gov/niosh/npg/npgd0397.html
+- https://www.cdc.gov/niosh/npg/npgd0400.html
+- https://www.cdc.gov/niosh/npg/npgd0403.html
+- https://www.cdc.gov/niosh/npg/npgd0404.html
+- https://www.cdc.gov/niosh/npg/npgd0410.html
+- https://www.cdc.gov/niosh/npg/npgd0416.html
+- https://www.cdc.gov/niosh/npg/npgd0417.html
+- https://www.cdc.gov/niosh/npg/npgd0419.html
+- https://www.cdc.gov/niosh/npg/npgd0420.html
+- https://www.cdc.gov/niosh/npg/npgd0421.html
+- https://www.cdc.gov/niosh/npg/npgd0422.html
+- https://www.cdc.gov/niosh/npg/npgd0423.html
+- https://www.cdc.gov/niosh/npg/npgd0424.html
+- https://www.cdc.gov/niosh/npg/npgd0425.html
+- https://www.cdc.gov/niosh/npg/npgd0426.html
+- https://www.cdc.gov/niosh/npg/npgd0399.html
+- https://www.cdc.gov/niosh/npg/npgd0427.html
+- https://www.cdc.gov/niosh/npg/npgd0428.html
+- https://www.cdc.gov/niosh/npg/npgd0396.html
+- https://www.cdc.gov/niosh/npg/npgd0398.html
+- https://www.cdc.gov/niosh/npg/npgd0406.html
+- https://www.cdc.gov/niosh/npg/npgd0407.html
+- https://www.cdc.gov/niosh/npg/npgd0412.html
+- https://www.cdc.gov/niosh/npg/npgd0413.html
+- https://www.cdc.gov/niosh/npg/npgd0414.html
+- https://www.cdc.gov/niosh/npg/npgd0430.html
+- https://www.cdc.gov/niosh/npg/npgd0503.html
+- https://www.cdc.gov/niosh/npg/npgd0431.html
+- https://www.cdc.gov/niosh/npg/npgd0433.html
+- https://www.cdc.gov/niosh/npg/npgd0435.html
+- https://www.cdc.gov/niosh/npg/npgd0436.html
+- https://www.cdc.gov/niosh/npg/npgd0437.html
+- https://www.cdc.gov/niosh/npg/npgd0031.html
+- https://www.cdc.gov/niosh/npg/npgd0072.html
+- https://www.cdc.gov/niosh/npg/npgd0076.html
+- https://www.cdc.gov/niosh/npg/npgd0081.html
+- https://www.cdc.gov/niosh/npg/npgd0082.html
+- https://www.cdc.gov/niosh/npg/npgd0086.html
+- https://www.cdc.gov/niosh/npg/npgd0281.html
+- https://www.cdc.gov/niosh/npg/npgd0322.html
+- https://www.cdc.gov/niosh/npg/npgd0324.html
+- https://www.cdc.gov/niosh/npg/npgd0361.html
+- https://www.cdc.gov/niosh/npg/npgd0461.html
+- https://www.cdc.gov/niosh/npg/npgd0486.html
+- https://www.cdc.gov/niosh/npg/npgd0500.html
+- https://www.cdc.gov/niosh/npg/npgd0532.html
+- https://www.cdc.gov/niosh/npg/npgd0533.html
+- https://www.cdc.gov/niosh/npg/npgd0539.html
+- https://www.cdc.gov/niosh/npg/npgd0652.html
+- https://www.cdc.gov/niosh/npg/npgd0438.html
+- https://www.cdc.gov/niosh/npg/npgd0439.html
+- https://www.cdc.gov/niosh/npg/npgd0440.html
+- https://www.cdc.gov/niosh/npg/npgd0443.html
+- https://www.cdc.gov/niosh/npg/npgd0444.html
+- https://www.cdc.gov/niosh/npg/npgd0445.html
+- https://www.cdc.gov/niosh/npg/npgd0446.html
+- https://www.cdc.gov/niosh/npg/npgd0447.html
+- https://www.cdc.gov/niosh/npg/npgd0448.html
+- https://www.cdc.gov/niosh/npg/npgd0450.html
+- https://www.cdc.gov/niosh/npg/npgd0453.html
+- https://www.cdc.gov/niosh/npg/npgd0454.html
+- https://www.cdc.gov/niosh/npg/npgd0455.html
+- https://www.cdc.gov/niosh/npg/npgd0456.html
+- https://www.cdc.gov/niosh/npg/npgd0457.html
+- https://www.cdc.gov/niosh/npg/npgd0465.html
+- https://www.cdc.gov/niosh/npg/npgd0466.html
+- https://www.cdc.gov/niosh/npg/npgd0034.html
+- https://www.cdc.gov/niosh/npg/npgd0122.html
+- https://www.cdc.gov/niosh/npg/npgd0134.html
+- https://www.cdc.gov/niosh/npg/npgd0135.html
+- https://www.cdc.gov/niosh/npg/npgd0154.html
+- https://www.cdc.gov/niosh/npg/npgd0180.html
+- https://www.cdc.gov/niosh/npg/npgd0189.html
+- https://www.cdc.gov/niosh/npg/npgd0231.html
+- https://www.cdc.gov/niosh/npg/npgd0462.html
+- https://www.cdc.gov/niosh/npg/npgd0408.html
+- https://www.cdc.gov/niosh/npg/npgd0084.html
+- https://www.cdc.gov/niosh/npg/npgd0591.html
+- https://www.cdc.gov/niosh/npg/npgd0618.html
+- https://www.cdc.gov/niosh/npg/npgd0622.html
+- https://www.cdc.gov/niosh/npg/npgd0668.html
+- https://www.cdc.gov/niosh/npg/npgd0468.html
+- https://www.cdc.gov/niosh/npg/npgd0470.html
+- https://www.cdc.gov/niosh/npg/npgd0472.html
+- https://www.cdc.gov/niosh/npg/npgd0473.html
+- https://www.cdc.gov/niosh/npg/npgd0474.html
+- https://www.cdc.gov/niosh/npg/npgd0475.html
+- https://www.cdc.gov/niosh/npg/npgd0476.html
+- https://www.cdc.gov/niosh/npg/npgd0035.html
+- https://www.cdc.gov/niosh/npg/npgd0156.html
+- https://www.cdc.gov/niosh/npg/npgd0190.html
+- https://www.cdc.gov/niosh/npg/npgd0233.html
+- https://www.cdc.gov/niosh/npg/npgd0464.html
+- https://www.cdc.gov/niosh/npg/npgd0449.html
+- https://www.cdc.gov/niosh/npg/npgd0452.html
+- https://www.cdc.gov/niosh/npg/npgd0495.html
+- https://www.cdc.gov/niosh/npg/npgd0593.html
+- https://www.cdc.gov/niosh/npg/npgd0085.html
+- https://www.cdc.gov/niosh/npg/npgd0624.html
+- https://www.cdc.gov/niosh/npg/npgd0670.html
+- https://www.cdc.gov/niosh/npg/npgd0477.html
+- https://www.cdc.gov/niosh/npg/npgd0478.html
+- https://www.cdc.gov/niosh/npg/npgd0479.html
+- https://www.cdc.gov/niosh/npg/npgd0481.html
+- https://www.cdc.gov/niosh/npg/npgd0482.html
+- https://www.cdc.gov/niosh/npg/npgd0483.html
+- https://www.cdc.gov/niosh/npg/npgd0484.html
+- https://www.cdc.gov/niosh/npg/npgd0485.html
+- https://www.cdc.gov/niosh/npg/npgd0599.html
+- https://www.cdc.gov/niosh/npg/npgd0489.html
+- https://www.cdc.gov/niosh/npg/npgd0490.html
+- https://www.cdc.gov/niosh/npg/npgd0491.html
+- https://www.cdc.gov/niosh/npg/npgd0492.html
+- https://www.cdc.gov/niosh/npg/npgd0493.html
+- https://www.cdc.gov/niosh/npg/npgd0494.html
+- https://www.cdc.gov/niosh/npg/npgd0683.html
+- https://www.cdc.gov/niosh/npg/npgd0496.html
+- https://www.cdc.gov/niosh/npg/npgd0498.html
+- https://www.cdc.gov/niosh/npg/npgd0499.html
+- https://www.cdc.gov/niosh/npg/npgd0501.html
+- https://www.cdc.gov/niosh/npg/npgd0502.html
+- https://www.cdc.gov/niosh/npg/npgd0504.html
+- https://www.cdc.gov/niosh/npg/npgd0505.html
+- https://www.cdc.gov/niosh/npg/npgd0506.html
+- https://www.cdc.gov/niosh/npg/npgd0508.html
+- https://www.cdc.gov/niosh/npg/npgd0509.html
+- https://www.cdc.gov/niosh/npg/npgd0510.html
+- https://www.cdc.gov/niosh/npg/npgd0511.html
+- https://www.cdc.gov/niosh/npg/npgd0507.html
+- https://www.cdc.gov/niosh/npg/npgd0512.html
+- https://www.cdc.gov/niosh/npg/npgd0514.html
+- https://www.cdc.gov/niosh/npg/npgd0515.html
+- https://www.cdc.gov/niosh/npg/npgd0516.html
+- https://www.cdc.gov/niosh/npg/npgd0517.html
+- https://www.cdc.gov/niosh/npg/npgd0518.html
+- https://www.cdc.gov/niosh/npg/npgd0519.html
+- https://www.cdc.gov/niosh/npg/npgd0521.html
+- https://www.cdc.gov/niosh/npg/npgd0522.html
+- https://www.cdc.gov/niosh/npg/npgd0523.html
+- https://www.cdc.gov/niosh/npg/npgd0524.html
+- https://www.cdc.gov/niosh/npg/npgd0525.html
+- https://www.cdc.gov/niosh/npg/npgd0527.html
+- https://www.cdc.gov/niosh/npg/npgd0529.html
+- https://www.cdc.gov/niosh/npg/npgd0530.html
+- https://www.cdc.gov/niosh/npg/npgd0531.html
+- https://www.cdc.gov/niosh/npg/npgd0534.html
+- https://www.cdc.gov/niosh/npg/npgd0535.html
+- https://www.cdc.gov/niosh/npg/npgd0536.html
+- https://www.cdc.gov/niosh/npg/npgd0537.html
+- https://www.cdc.gov/niosh/npg/npgd0538.html
+- https://www.cdc.gov/niosh/npg/npgd0685.html
+- https://www.cdc.gov/niosh/npg/npgd0541.html
+- https://www.cdc.gov/niosh/npg/npgd0684.html
+- https://www.cdc.gov/niosh/npg/npgd0542.html
+- https://www.cdc.gov/niosh/npg/npgd0543.html
+- https://www.cdc.gov/niosh/npg/npgd0544.html
+- https://www.cdc.gov/niosh/npg/npgd0546.html
+- https://www.cdc.gov/niosh/npg/npgd0548.html
+- https://www.cdc.gov/niosh/npg/npgd0032.html
+- https://www.cdc.gov/niosh/npg/npgd0073.html
+- https://www.cdc.gov/niosh/npg/npgd0077.html
+- https://www.cdc.gov/niosh/npg/npgd0327.html
+- https://www.cdc.gov/niosh/npg/npgd0550.html
+- https://www.cdc.gov/niosh/npg/npgd0551.html
+- https://www.cdc.gov/niosh/npg/npgd0552.html
+- https://www.cdc.gov/niosh/npg/npgd0554.html
+- https://www.cdc.gov/niosh/npg/npgd0555.html
+- https://www.cdc.gov/niosh/npg/npgd0556.html
+- https://www.cdc.gov/niosh/npg/npgd0557.html
+- https://www.cdc.gov/niosh/npg/npgd0559.html
+- https://www.cdc.gov/niosh/npg/npgd0560.html
+- https://www.cdc.gov/niosh/npg/npgd0561.html
+- https://www.cdc.gov/niosh/npg/npgd0562.html
+- https://www.cdc.gov/niosh/npg/npgd0563.html
+- https://www.cdc.gov/niosh/npg/npgd0564.html
+- https://www.cdc.gov/niosh/npg/npgd0565.html
+- https://www.cdc.gov/niosh/npg/npgd0566.html
+- https://www.cdc.gov/niosh/npg/npgd0567.html
+- https://www.cdc.gov/niosh/npg/npgd0568.html
+- https://www.cdc.gov/niosh/npg/npgd0569.html
+- https://www.cdc.gov/niosh/npg/npgd0570.html
+- https://www.cdc.gov/niosh/npg/npgd0571.html
+- https://www.cdc.gov/niosh/npg/npgd0572.html
+- https://www.cdc.gov/niosh/npg/npgd0573.html
+- https://www.cdc.gov/niosh/npg/npgd0574.html
+- https://www.cdc.gov/niosh/npg/npgd0586.html
+- https://www.cdc.gov/niosh/npg/npgd0575.html
+- https://www.cdc.gov/niosh/npg/npgd0576.html
+- https://www.cdc.gov/niosh/npg/npgd0578.html
+- https://www.cdc.gov/niosh/npg/npgd0579.html
+- https://www.cdc.gov/niosh/npg/npgd0580.html
+- https://www.cdc.gov/niosh/npg/npgd0577.html
+- https://www.cdc.gov/niosh/npg/npgd0581.html
+- https://www.cdc.gov/niosh/npg/npgd0582.html
+- https://www.cdc.gov/niosh/npg/npgd0584.html
+- https://www.cdc.gov/niosh/npg/npgd0585.html
+- https://www.cdc.gov/niosh/npg/npgd0587.html
+- https://www.cdc.gov/niosh/npg/npgd0588.html
+- https://www.cdc.gov/niosh/npg/npgd0589.html
+- https://www.cdc.gov/niosh/npg/npgd0590.html
+- https://www.cdc.gov/niosh/npg/npgd0074.html
+- https://www.cdc.gov/niosh/npg/npgd0078.html
+- https://www.cdc.gov/niosh/npg/npgd0080.html
+- https://www.cdc.gov/niosh/npg/npgd0600.html
+- https://www.cdc.gov/niosh/npg/npgd0601.html
+- https://www.cdc.gov/niosh/npg/npgd0602.html
+- https://www.cdc.gov/niosh/npg/npgd0603.html
+- https://www.cdc.gov/niosh/npg/npgd0604.html
+- https://www.cdc.gov/niosh/npg/npgd0605.html
+- https://www.cdc.gov/niosh/npg/npgd0606.html
+- https://www.cdc.gov/niosh/npg/npgd0607.html
+- https://www.cdc.gov/niosh/npg/npgd0610.html
+- https://www.cdc.gov/niosh/npg/npgd0611.html
+- https://www.cdc.gov/niosh/npg/npgd0612.html
+- https://www.cdc.gov/niosh/npg/npgd0613.html
+- https://www.cdc.gov/niosh/npg/npgd0615.html
+- https://www.cdc.gov/niosh/npg/npgd0616.html
+- https://www.cdc.gov/niosh/npg/npgd0617.html
+- https://www.cdc.gov/niosh/npg/npgd0619.html
+- https://www.cdc.gov/niosh/npg/npgd0621.html
+- https://www.cdc.gov/niosh/npg/npgd0620.html
+- https://www.cdc.gov/niosh/npg/npgd0625.html
+- https://www.cdc.gov/niosh/npg/npgd0626.html
+- https://www.cdc.gov/niosh/npg/npgd0629.html
+- https://www.cdc.gov/niosh/npg/npgd0630.html
+- https://www.cdc.gov/niosh/npg/npgd0633.html
+- https://www.cdc.gov/niosh/npg/npgd0634.html
+- https://www.cdc.gov/niosh/npg/npgd0635.html
+- https://www.cdc.gov/niosh/npg/npgd0640.html
+- https://www.cdc.gov/niosh/npg/npgd0636.html
+- https://www.cdc.gov/niosh/npg/npgd0642.html
+- https://www.cdc.gov/niosh/npg/npgd0644.html
+- https://www.cdc.gov/niosh/npg/npgd0643.html
+- https://www.cdc.gov/niosh/npg/npgd0645.html
+- https://www.cdc.gov/niosh/npg/npgd0647.html
+- https://www.cdc.gov/niosh/npg/npgd0648.html
+- https://www.cdc.gov/niosh/npg/npgd0650.html
+- https://www.cdc.gov/niosh/npg/npgd0653.html
+- https://www.cdc.gov/niosh/npg/npgd0654.html
+- https://www.cdc.gov/niosh/npg/npgd0655.html
+- https://www.cdc.gov/niosh/npg/npgd0656.html
+- https://www.cdc.gov/niosh/npg/npgd0657.html
+- https://www.cdc.gov/niosh/npg/npgd0658.html
+- https://www.cdc.gov/niosh/npg/npgd0659.html
+- https://www.cdc.gov/niosh/npg/npgd0660.html
+- https://www.cdc.gov/niosh/npg/npgd0663.html
+- https://www.cdc.gov/niosh/npg/npgd0661.html
+- https://www.cdc.gov/niosh/npg/npgd0662.html
+- https://www.cdc.gov/niosh/npg/npgd0664.html
+- https://www.cdc.gov/niosh/npg/npgd0665.html
+- https://www.cdc.gov/niosh/npg/npgd0672.html
+- https://www.cdc.gov/niosh/npg/npgd0673.html
+- https://www.cdc.gov/niosh/npg/npgd0674.html
+- https://www.cdc.gov/niosh/npg/npgd0675.html
+- https://www.cdc.gov/niosh/npg/npgd0676.html
+- https://www.cdc.gov/niosh/npg/npgd0677.html
 
 ## Fields