Noncoal Contractor Mining Facts - 2008 (HTML)

Keywords: Fatality rates Injury rates Non-fatal days lost rates
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DHHS (NIOSH) Publication No. 2011–169

Mining Operations

An independent contractor is defined by the Mine Safety and Health Administration (MSHA) as "any person, partnership, corporation, subsidiary of a corporation, firm, association or other organization that contracts to perform services or construction at a mine."  Contractors that perform specific types of work are required to report the number of employees who work at coal mines and noncoal mines.

Companies

In 2008, a total of 6,128 independent contracting companies reported employment at noncoal mines, or 63.9% of all independent contracting companies.

Employees

A total of 75,451 employees, [1] corresponding to 40,086 full-time equivalent (FTE) [2] employees, were reported by noncoal contractors.

  • Within the mining sectors, [3] noncaol contractor employees comprised 11.8% of all employee hours reported to MSHA.
  • Noncoal contractor employee hours were reported for both underground (5.0%) and surface (95.0%) work locations. [4]

Graph of the number of employee hours by commodity, 1999-2008 (see data table below)

Click on the image to enlarge.

Data for the previous chart showing the number of employee hours (in millions) by commodity and year
Commodity and Type
of Employer		 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
Coal Operator 170.3 157.3 168.4 163.8 157.1 166.5 181.3 189.0 186.5 200.4
Metal Operator 83.4 77.4 68.8 58.5 55.5 59.5 63.4 67.9 75.5 81.4
Nonmetal Operator 54.7 53.1 50.6 47.5 46.9 46.9 46.2 46.4 46.5 46.5
Stone Operator 167.8 168.5 166.1 161.7 160.0 163.5 168.6 170.8 166.5 153.5
Sand and Gravel Operator 78.9 78.1 77.0 75.3 74.8 76.6 78.4 79.6 76.7 66.7
Coal Contractor 35.4 36.2 40.3 36.5 35.0 38.5 43.0 46.2 45.5 52.6
Noncoal Contractor 47.8 54.2 49.8 39.2 39.9 46.8 54.1 62.6 76.3 80.2

Fatalities

Five occupational fatalities occurred among noncoal contractor employees in 2008, accounting for 29.4% of all fatalities attributed to independent contractors.

  • The noncoal contractor fatality rate for all work locations was 13.2 [95% confidence interval (CI): 4.3%, 30.8] fatalities per 100,000 FTE employees.

Graph of the number of fatalities by mine worker location, 1999-2008 (see data table below)

Click on the image to enlarge.

Data for the previous chart showing the number of fatalities for underground and surface work locations by year
Fatalities 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
Underground number 3 0 1 1 0 0 0 0 2 0
Surface number 15 12 9 5 4 8 2 7 10 5

Nonfatal Lost-time Injuries

There were 501 nonfatal lost-time injuries among noncaol contractor employees (38 at underground and 463 at surface work locations) with an overall rate of 1.3 [CI: 1.2, 1.4] injuries per 100 FTE employees. These injuries resulted in 20,902 days lost from work. [5]

  • The underground nonfatal lost-time injury rate for noncoal contractor employees was 1.9 [CI: 1.3, 2.6], while the surface rate was 1.3 [CI: 1.3, 2.6], while the surface rate was 1.3 [CI: 1.2, 1.4] per 100 FTE workers.
  • The most frequent classification of nonfatal lost-time injuries reported for noncoal contractor employees involved handling materials (n=169; 33.7%), followed by slip or fall of person (n=132; 26.3%).
  • Sprains and strains were the most frequently reported nature of injury (n=161; 32.1%).
  • In 2008, the most frequently reported body parts injured were the fingers (n=93; 18.6%; 3,683 days lost from work) and the back (n=71; 14.2%; 2,868 days lost from work).

Chart of the distribution of nonfatal lost-time injuries by accident class among noncoal contractor employees, 2008 (see data table below)

Click on the image to enlarge.

Distribution of nonfatal lost-time injuries by accident class among noncoal contractor employees for 2008
Accident Class Percent
Handling materials 33.7
Slip or fall of person 26.3
Machinery 12.4
Powered haulage 9.8
Hand tools 8.0
All other 9.8

Mining operations, 2007

Commodity and Type of Employer Underground Mining Operations Surface Mining Operations Total Mining Operations
Coal 665 1,464 2,129
Metal 105 188 293
Nonmetal 44 676 720
Stone 111 4,522 4,633
Sand & Gravel Not applicable 7,132 7,132
Total 925 13,982 14,907

 

 

Contracting companies, 2007

Commodity and Type of Employer Number of Companies
Coal 3,467
Noncoal 6,128
Total 9,595

 

 

Employment characteristics, 2007

Commodity and Type of Employer Underground Employees [1] Surface Employees [1] Total Employees [1] Underground FTE Employees [2] Surface FTE Employees [2] Total FTE Employees [2]
Coal Operator 40,370 49,685 90,055 45,866 54,312 100,178
Metal Operator 5,844 33,282 39,126 5,842 34,840 40,682
Nonmetal Operator 2,579 20,454 23,033 2,725 20,534 23,260
Stone Operator 1,875 77,100 78,975 2,029 74,720 76,749
Sand & Gravel Operator Not applicable 42,307 42,307 Not applicable 33,343 33,343
Operator Total 50,668 222,828 273,496 56,462 217,750 274,212
Coal Contractor 6,262 37,510 43,772 4,105 22,216 26,321
Noncoal Contractor 2,992 72,459 75,451 1,998 38,088 40,086
Contractor Total 9,254 109,969 119,223 6,103 60,304 66,407
Total 59,922 332,797 392,719 62,565 278,054 340,620

 

 

Mining Occupational Fatalities (per 100,000 FTE employees), 2007

Commodity and Type of Employer Underground Fatalities Underground Fatality Rate Surface Fatalities Surface Fatality Rate Fatalities Fatality Rate
Coal Operator 12 26.2 6 11.9 18 18.7
Metal Operator 3 Not calculated 2 Not calculated 5 13.8
Nonmetal Operator 1 Not calculated 1 Not calculated 2 Not calculated
Stone Operator 1 Not calculated 6 9.4 7 10.6
Sand & Gravel Operator Not applicable Not applicable 3 Not calculated 3 Not calculated
Operator Total 17 30.1 18 9.4 35 14.2
Coal Contractor 3 Not calculated 9 43.4 12 48.3
Noncoal Contractor 0 Not calculated 5 13.9 5 13.2
Contractor Total 3 Not calculated 14 24.7 17 27.1
Total 20 32.0 32 12.9 52 16.8

 

 

Nonfatal Lost-time Injuries (per 100 FTE employees), 2007

Commodity and Type of Employer Underground Injuries Underground Injury Rate Surface Injuries Surface Injury Rate Injuries Injury Rate
Coal Operator 2,103 4.6 768 1.5 2,871 3.0
Metal Operator 163 2.8 649 2.1 812 2.2
Nonmetal Operator 95 3.5 412 2.4 507 2.5
Stone Operator 33 1.6 1,593 2.5 1,626 2.5
Sand & Gravel Operator Not applicable Not applicable 550 1.9 550 1.9
Operator Total 2,394 4.2 3,972 2.1 6,366 2.6
Coal Contractor 168 4.1 313 1.5 481 1.9
Noncoal Contractor 38 1.9 463 1.3 501 1.3
Contractor Total 206 3.4 776 1.4 982 1.6
Total 2,600 4.2 4,748 1.9 7,348 2.4

Not calculated when N is less than 5.    95% CI for rates reported above.    Totals may not sum due to independent rounding.

 

 

Data source: Publicly released data files of employment and accident/injury/illness collected by MSHA under 30 CFR 50.

Notes: All analyses of accident data exclude office employees. Occupational fatalities exclude all cases under 17 years of age. Further statistical methodology is available on the NIOSH Internet. Data in the above tables may not add to totals shown because of independent rounding. Caution should be used when interpreting rates based on a small number of events.

  1. Average number of employees working at individual mines during calendar quarters of active operations (includes office workers).
  2. Full-time equivalent employees computed using reported employee hours (2,000 hours = 1 FTE).
  3. Mining sectors include coal operators, metal operators, nonmetal operators, stone operators, sand and gravel operators, coal contractors, and noncoal contractors.
  4. Surface work locations include surface operations at underground mines, surface operations (strip or open pit), dredge, other surface operations, independent shops and yards, and mills or preparation plants.
  5. Includes actual days away from work and/or days of restricted work activity. For permanently disabling injuries only, statutory days charged by MSHA were used if they exceeded the total lost workdays.

To receive NIOSH documents or more information about occupational safety and health topics, contact NIOSH at 1-800-CDC-INFO (1-800-232-4636), TTY: 1-888-232-6348, or visit NIOSH's Ask an Occupational Safety and Health Question page.

 

See Also
Page last reviewed: April 6, 2022
Page last updated: April 6, 2022
Content source: National Institute for Occupational Safety and Health, Mining Program