Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2002
0
2001
1
2000
2
1999
1
1998
2
1997
3
1996
5
1995
4
1994
3
1993
4
1992
2
1991
1
1990
2
1989
16
1988
2
1987
16
1986
2
1985
1
1984
1
1983
2
Source: MSHA quarterly employment and production, updated weekly; years before 2000 come from MSHA's archived Part 50 employment files.
AUBURN SAND & GRAVEL sits in Sac County, Iowa, where the Census mining category is 0.1% of county employment.
Local economic context
ⓘCounty figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Sac County, Iowa · Population 9,759
0.1%
Mining share of county employment
$70,991
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
ⓘCitations per million reported employee-hours. Rates begin in 2000; earlier incidents are counted but not rate-adjusted, though reported hours reach back to 1983. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2002 Q4
0
0
0
2002 Q3
0
0
0
2002 Q2
0
0
0
2002 Q1
15
0
0
0.0
2001 Q4
381
0
0
0.0
2001 Q3
543
0
0
0.0
2001 Q2
407
0
0
0.0
2000 Q4
388
0
0
0.0
Show 3 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2000 Q3
1,092
0
0
0.0
2000 Q2
1,007
0
0
0.0
2000 Q1
117
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
1 on file
1995 · 1 incident
September 6, 1995IA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
LIFTING LARGE ROCKS OUT OF WAY OF CONVEYOR INJURY TO LOWER BACK. PULLED HIS BACK ON 9-6-95 BUT DID NOT REPORT TO MY OFFICE OR QUIET WORKING UNTIL 9-19-95.
Related mines
Other mines operated by Martin Marietta Aggregates