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Statistics: Stone Operators

Introduction

The following maps, graphs, and tables represent data for Stone Mne Operators. The information is organized by Mines, Employees, Fatalities, and Injuries. The Mines section contains information on the number and location of the mining operations. The Employees section details the number of employees and the number of employee hours. The Fatalities section describes the number and rate of fatalities, the number and rate by work locations, and the number of fatalities by accident class. The Injuries section presents the number and rate of nonfatal lost-time injuries, the number and rate by work locations, and the number of injuries by accident class. Data source: Mine Safety and Health Administration (MSHA). See Statistical Methodology for further details.

Mines

Locations of Active Stone Mining Operations, 2012: United States map displaying the locations of active stone mining operations spotted randomly within counties in 2012Locations of Active Stone Mining Operations, 2012: United States map displaying the locations of active stone mining operations spotted randomly within counties in 2012. Active mines are mining operations that reported mine operator employment during the year. There were 4,433 stone mines. Mines at which only contractors were working did not show any employment and are not displayed.

Number of Active Stone Mines by Year, 2003-2012Number of Active Stone Mines by Year, 2003-2012: Graph displaying the number of active mines for a 10-year period from 2003 through 2012. Active mines are those mines that reported any mine operator employee hours during the year. Stone mines have remained relatively level over the period with 4,433 mines in 2012. 

Locations of Active Underground Stone Mining Operations, 2012Locations of Active Underground Stone Mining Operations, 2012: United States map displaying the locations of active underground stone mining operations mining spotted randomly within counties in 2012. Active mines are mining operations that reported mine operator employment during the year. There were 111 underground stone mines. Mines at which only contractors were working did not show any employment and are not displayed.

Locations of Active Surface Stone Mining Operations, 2012Locations of Active Surface Stone Mining Operations, 2012: United States map displaying the locations of active surface stone mining operations spotted randomly within counties in 2012. Active mines are mining operations that reported mine operator employment during the year. There were 4,322 surface stone mines. Mines at which only contractors were working did not show any employment and are not displayed.

Employees

Stone Mine Operator Employees, 2012Stone Mine Operator Employees, 2012: Map of the United States displaying employment density by county of the 66,201 stone mine operator employees in 2012. A graduated color ramp is used to symbolize densities of less than 25 employees, 25 to 49 employees, 50 to 199 employees, 200 to 499 employees, and 500 or more employees. 

Number of Employee Hours Reported by Stone Mine Operators, 2003-2012Number of Employee Hours Reported by Stone Mine Operators, 2003-2012: Graph displaying the number of stone mine operator employee hours reported from 2003 through 2012. The employee hours varied over the period from 160.0 million hours in 2003 to 127.0 million hours reported for 2012. The largest decline in hours was from 2006 when 170.8 million hours were reported to 2009 when the hours were 127.7 million.

Number of Underground Employee Hours Reported by Stone Mine Operators, 2003-2012Number of Underground Employee Hours Reported by Stone Mine Operators, 2003-2012: Graph displaying the number of underground stone mine operator employee hours reported from 2003 through 2012. The employee hours varied over the period from a low of 3.6 million hours in 2009 to a high of 4.3 million hours in 2005 and 2006. There were 3.8 million employee hours reported for 2012.

Number of Employee Hours Reported by Surface Stone Mine Operators, 2003-2012Number of Employee Hours Reported by Surface Stone Mine Operators, 2003-2012: Graph displaying the number of surface stone mine operator employee hours reported from 2003 through 2012. The employee hours varied over the period from 156.3 million hours in 2003 to 123.2 million hours reported for 2012. Employment has been stable from 2009 to 2012.

Fatalities

Stone Operator Occupational Mining Fatalities by Year, 2003-2012Stone Operator Occupational Mining Fatalities by Year, 2003-2012: Graph displaying the number of occupational mining fatalities, excluding office employees, from 2003 through 2012. Rates are not computed when there are a small number of events. Fatalities varied over the period with the highest number being 15 in 2005. The year with the least number of fatalities was 2009 when 4 occurred.

Injuries

Nonfatal Lost-time Injuries, 2012 (Stone Mine Operators and Independent Contractors)Nonfatal Lost-time Injuries, 2012 (Stone Mine Operators and Independent Contractors): Map of the United States displaying nonfatal lost-time injury density by county for 1,269 stone mine operator and contractor injuries during 2012. Office workers are excluded. A graduated color ramp is used to symbolize densities of zero injuries, 1 thru 9, 10 thru 29, 30 thru 49, and 50 or more injuries.

Number and Rate of Stone Mining Operator Nonfatal Lost-time Injuries at Underground Work Locations by Year, 2003-2012Number and Rate of Stone Mining Operator Nonfatal Lost-time Injuries at Underground Work Locations by Year, 2003-2012: Chart displaying the number and rate of stone mining operator nonfatal lost-time injuries at underground work locations, excluding office employees, from 2003 through 2012. Full-time equivalent (FTE) employees are based on 2,000 employee hours worked per year. The rates and numbers have varied over the period. The highest rate was 3.9 nonfatal lost-time injuries per 100 FTEs in 2004 to a low rate of 1.6 in 2008. The highest number of injuries occurred in 2004 when 77 were reported. The year during the period with the lowest number of nonfatal lost-time injuries was 2008 when 33 were reported.

Stone Operator Nonfatal Lost-time Injuries by Accident Class for Underground Mining Locations, 2008-2012Stone Operator Nonfatal Lost-time Injuries by Accident Class for Underground Mining Locations, 2008-2012: Pie chart displaying the distribution of nonfatal lost-time injuries by accident class for stone operators at underground mining locations for the period from 2008 through 2012. Excluding office employees, there were a total of 188 lost-time injuries. "Handling materials" had 24.5%, "Slip or fall of person" had 21.3%, and "Powered haulage" had 13.8% of the nonfatal lost-time injures. "Fall of ground (from in place)", which includes MSHA’s Accident/Injury/Illness Classifications for “Fall of face, rib, pillar, side, or highwall from in place” and “Fall of roof, back, or brow from in place,” had 12.8% of the nonfatal lost-time injuries. Nonfatal injury cases classified under machinery were reclassified as a fall of ground (from in place) if the source of the injury was caving rock, ore, etc. This reclassification is consistent with how MSHA classifies similar incidents which resulted in a fatal injury. "Hand tools" accounted for 11.2%, "Machinery" had 5.9%, and the "All other" category was 10.6% of the nonfatal lost-time injuries during the 5-year period. Note that the sum of percentages may not equal 100 due to independent rounding.

Number and Rate of Stone Mining Operator Nonfatal Lost-time Injuries at Surface Work Locations by Year, 2003-2012Number and Rate of Stone Mining Operator Nonfatal Lost-time Injuries at Surface Work Locations by Year, 2003-2012: Chart displaying the number and rate of stone mining operator nonfatal lost-time injuries at surface work locations, excluding office employees, from 2003 through 2012. Full-time equivalent (FTE) employees are based on 2,000 employee hours worked per year. The rate of nonfatal lost-time injuries has decreased over the period from 3.4 to 2.1 per 100 FTEs. The numbers have also declined from 2,317 in 2003 to 1,080 nonfatal lost-time injuries in 2011. In 2012, 1,099 nonfatal lost-time injuries occurred.

Stone Operator Nonfatal Lost-time Injuries by Accident Class for Surface Mining Locations, 2008-2012Stone Operator Nonfatal Lost-time Injuries by Accident Class for Surface Mining Locations, 2008-2012: Pie chart displaying the distribution of nonfatal lost-time injuries by accident class for stone operators at surface mining locations for the period from 2008 through 2012. Excluding office employees, there were a total of 6,137 lost-time injuries. "Handling materials" had 37.2% and "Slip or fall of person" had 25.2% of the nonfatal lost-time injuries. "Hand tools" had 12.8% and "Machinery" comprised 9.3% of the nonfatal lost-time injuries. Note that nonfatal injury cases classified under machinery were reclassified as a fall of ground (from in place) if the source of the injury was caving rock, ore, etc. This reclassification is consistent with how MSHA classifies similar incidents which resulted in a fatal injury. "Powered haulage" had 7.0% and the "All other" category accounted for 8.5% of the nonfatal lost-time injuries during the 5-year period. Note that the sum of percentages may not equal 100 due to independent rounding.

 
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