Mine Safety and Health Administration (MSHA)
423,284Words in 44 parts
23.2Restriction density (per 1,000 words)
16.2Reading grade
94.8%Unchanged since 2017
10Flagged parts
2026-07-27Last change
Section changes per year
From the eCFR versioner, for the parts that the agency owns now. Before 2017 is the baseline load.
Text and size
- Sentences
- 27.4 words on average; 19.2% over 40 words; 45.4% passive; 12.8 cross-references per 1,000 words
- Sentence types
- definition 4.0% · prohibition 5.5% · paperwork 7.2% · obligation 39.9% · permission 4.8% · other 38.6%
- Checksum
4d36caf9ffbdcf0e666d76d3866f16271f46a6a5171b8125384cbba67fee7abc
Review candidates in this agency
| Rank | Part | Words | Score |
|---|---|---|---|
| 66 top 10% | 30 CFR 75
MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
High signals: Size
+2.5 SD · Restriction density
+2.3 SD · Directive share
+2.1 SD |
107,176 | 1.26 |
| 130 top 10% | 30 CFR 49
MINE RESCUE TEAMS
High signals: Directive share
+2.1 SD · Restriction density
+2.0 SD · Paperwork share
+1.8 SD |
6,878 | 1.07 |
| 186 top 10% | 30 CFR 77
MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES
High signals: Restriction density
+2.9 SD · Directive share
+2.1 SD · Size
+1.5 SD |
32,447 | 1.02 |
| 222 top 10% | 30 CFR 41
NOTIFICATION OF LEGAL IDENTITY
High signals: Paperwork share
+3.0 SD · Reading grade
+2.0 SD |
1,617 | 0.96 |
| 227 top 10% | 30 CFR 48
TRAINING AND RETRAINING OF MINERS
High signals: Restriction density
+2.7 SD · Directive share
+2.2 SD |
12,646 | 0.96 |
| 252 top 10% | 30 CFR 28
FUSES FOR USE WITH DIRECT CURRENT IN PROVIDING SHORT-CIRCUIT PROTECTION FOR TRAILING CABLES IN COAL MINES
High signals: Directive share
+1.9 SD · Restriction density
+1.7 SD · Paperwork share
+1.3 SD |
3,036 | 0.93 |
| 304 top 10% | 30 CFR 57
SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
High signals: Restriction density
+2.6 SD · Size
+1.9 SD · Directive share
+1.6 SD |
55,417 | 0.89 |
| 324 top 10% | 30 CFR 36
APPROVAL REQUIREMENTS FOR PERMISSIBLE MOBILE DIESEL-POWERED TRANSPORTATION EQUIPMENT
High signals: Restriction density
+3.3 SD · Directive share
+1.9 SD |
7,754 | 0.87 |
| 607 top 10% | 30 CFR 33
DUST COLLECTORS FOR USE IN CONNECTION WITH ROCK DRILLING IN COAL MINES
High signals: Restriction density
+2.2 SD · Directive share
+1.4 SD |
4,589 | 0.72 |
| 611 top 10% | 30 CFR 44
RULES OF PRACTICE FOR PETITIONS FOR MODIFICATION OF MANDATORY SAFETY STANDARDS
High signals: Restriction density
+1.7 SD · Directive share
+1.3 SD |
7,630 | 0.72 |
| 651 | 30 CFR 35
FIRE-RESISTANT HYDRAULIC FLUIDS
High signals: Restriction density
+2.4 SD · Directive share
+1.6 SD |
4,307 | 0.70 |
| 683 | 30 CFR 56
SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES
High signals: Restriction density
+2.9 SD · Size
+1.4 SD · Directive share
+1.3 SD |
30,653 | 0.69 |
| 739 | 30 CFR 71
MANDATORY HEALTH STANDARDS—SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES
High signals: Restriction density
+1.7 SD · Directive share
+1.5 SD |
8,429 | 0.67 |
| 742 | 30 CFR 7
TESTING BY APPLICANT OR THIRD PARTY
High signals: Restriction density
+2.4 SD · Size
+1.5 SD · Directive share
+1.2 SD |
35,542 | 0.66 |
| 762 | 30 CFR 70
MANDATORY HEALTH STANDARDS—UNDERGROUND COAL MINES
High signals: Paperwork share
+1.6 SD · Restriction density
+1.5 SD · Directive share
+1.4 SD |
6,914 | 0.66 |
| 872 | 30 CFR 18
ELECTRIC MOTOR-DRIVEN MINE EQUIPMENT AND ACCESSORIES
High signals: Restriction density
+1.5 SD · Directive share
+1.3 SD · Size
+1.2 SD |
24,249 | 0.61 |
| 887 | 30 CFR 90
MANDATORY HEALTH STANDARDS—COAL MINERS WHO HAVE EVIDENCE OF THE DEVELOPMENT OF PNEUMOCONIOSIS
High signals: Directive share
+1.7 SD · Restriction density
+1.5 SD · Paperwork share
+1.1 SD |
6,733 | 0.60 |
| 971 | 30 CFR 27
METHANE-MONITORING SYSTEMS
High signals: Restriction density
+1.9 SD · Directive share
+1.1 SD |
4,402 | 0.57 |
| 1,040 | 30 CFR 74
COAL MINE DUST SAMPLING DEVICES
High signals: Restriction density
+2.3 SD · Directive share
+1.2 SD |
6,432 | 0.54 |
| 1,259 | 30 CFR 46
TRAINING AND RETRAINING OF MINERS ENGAGED IN SHELL DREDGING OR EMPLOYED AT SAND, GRAVEL, SURFACE STONE, SURFACE CLAY, COLLOIDAL PHOSPHATE, OR SURFACE LIMESTONE MINES.
High signals: Directive share
+1.2 SD |
4,873 | 0.48 |
| 1,287 | 30 CFR 72
HEALTH STANDARDS FOR COAL MINES
High signals: Directive share
+1.7 SD · Restriction density
+1.2 SD |
2,785 | 0.47 |
| 1,761 | 30 CFR 62
OCCUPATIONAL NOISE EXPOSURE
High signals: none above 1 SD; ranked by the combined score |
4,534 | 0.34 |
| 2,188 | 30 CFR 22
PORTABLE METHANE DETECTORS
High signals: Restriction density
+1.6 SD |
2,633 | 0.23 |
| 2,464 | 30 CFR 43
PROCEDURES FOR PROCESSING HAZARDOUS CONDITIONS COMPLAINTS
High signals: none above 1 SD; ranked by the combined score |
1,359 | 0.16 |
| 2,506 | 30 CFR 23
TELEPHONES AND SIGNALING DEVICES
High signals: none above 1 SD; ranked by the combined score |
2,921 | 0.15 |
Score: the mean of six signals, in standard deviations (SD). Across the CFR, the top 641 of 6,402 ranked parts (10%) get a flag for review; this list shows 25. A flag is not a finding.
Statutes behind the most text
- 30 U.S.C. 811: 300,028 words in 18 parts (70.9% of this agency's text)
- 30 U.S.C. 957: 121,690 words in 20 parts (28.7% of this agency's text)
- 29 U.S.C. 557: 6,336 words in 1 parts (1.5% of this agency's text)
- 30 U.S.C. 801: 3,801 words in 3 parts (0.9% of this agency's text)
- 30 U.S.C. 813: 2,976 words in 2 parts (0.7% of this agency's text)
- 28 U.S.C. 2461: 2,709 words in 1 parts (0.6% of this agency's text)
- 30 U.S.C. 815: 2,709 words in 1 parts (0.6% of this agency's text)
- 5 U.S.C. 301: 2,709 words in 1 parts (0.6% of this agency's text)
- 44 U.S.C. 3501: 1,469 words in 1 parts (0.3% of this agency's text)
- 30 U.S.C. 804: 825 words in 1 parts (0.2% of this agency's text)
From the authority notes. A citation is not proof that the statute requires the rule.
Largest parts
- 30 CFR 75: MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES (107,176 words)
- 30 CFR 57: SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES (55,417 words)
- 30 CFR 7: TESTING BY APPLICANT OR THIRD PARTY (35,542 words)
- 30 CFR 77: MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES (32,447 words)
- 30 CFR 56: SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES (30,653 words)
- 30 CFR 18: ELECTRIC MOTOR-DRIVEN MINE EQUIPMENT AND ACCESSORIES (24,249 words)
- 30 CFR 48: TRAINING AND RETRAINING OF MINERS (12,646 words)
- 30 CFR 71: MANDATORY HEALTH STANDARDS—SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES (8,429 words)
- 30 CFR 36: APPROVAL REQUIREMENTS FOR PERMISSIBLE MOBILE DIESEL-POWERED TRANSPORTATION EQUIPMENT (7,754 words)
- 30 CFR 44: RULES OF PRACTICE FOR PETITIONS FOR MODIFICATION OF MANDATORY SAFETY STANDARDS (7,630 words)
Reading grade and sentence types are approximate. Simple rules label each sentence; the first match wins.