C & M Sand & Gravel · Struck by... (Not Elsewhere Classified)
LIFTING PUMP, BAR SLIPPED AND HIT EMPLOYEE ON HEAD.
Zweck Pit: 6 reportable incidents Metal/Non-Metal
C & M Sand & Gravel
· Surface
Controlled by
David B Nystrom
Boulder County,
CO
·
Abandoned
MSHA Mine ID: 0504375
Zweck Pit has had no fatalities among 6 reportable incidents since 1989.
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- Fatalities
- 0
- Total incidents
- 6
- Years on record
- 1989–1991
- Latest incident
- Jan 1991
Ownership history
- C & M Sand & Gravel 1988 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 1991 | 7 |
| 1990 | 9 |
| 1989 | 7 |
Source: MSHA quarterly employment and production, updated weekly; years before 2000 come from MSHA's archived Part 50 employment files.
Zweck Pit sits in Boulder County, Colorado, where the Census mining category is 0.3% 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.Boulder County, Colorado · Population 328,317
0.3%
Mining share of county employment
$102,772
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
No fatalities recorded at this mine.
Reportable incidents
6 on file1991 · 1 incident
1990 · 3 incidents
August 29, 1990
CO · Metal/Non-Metal
front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator
POWERED HAULAGE
C & M Sand & Gravel · Struck against a moving object
WAS OPERATING LOADER-WENT THROUGH A DIP AND TWISTED EMPLOYEES BACK.
C & M Sand & Gravel · Struck against stationary object
CRAWLING OUT FROM UNDER VAN HARDHAT FELL OFF RAISED UP TO LOOK FOR IT AND HIT HEAD.
C & M Sand & Gravel · Struck by falling object
UNLOADING SCREEN FRAME DROPPED FRAME ON RIGHT MIDDLE FINGER.
1989 · 2 incidents
C & M Sand & Gravel · Struck by falling object
LOADER OPER BRINGING BUCKET LOAD OF WOODEN BLOCKS TO USE AS BRACES AND TO SET THE PLANT ON BLOCKS WERE DROPPED ONTO EMP.
May 8, 1989
CO · Metal/Non-Metal
haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver
MACHINERY
C & M Sand & Gravel · Caught in, under or between a moving and a stationary object
RELEASING CHAIN BOOMER SNAPPED LOOSE CAUGHT ARM PINNING R WRIST TO DOZER.