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Marine Dolomite Mill: 3 reportable incidents Metal/Non-Metal

Tuolumne County, CA  ·  Abandoned
MSHA Mine ID: 0403493

MSHA record for Marine Dolomite Mill (mine ID 0403493). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.

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Fatalities
0
Total incidents
3
Years on record
1991–1993
Latest incident
Jan 1993
Ownership history
  1. Merck & Company Inc 1950 to 1989
  2. Marine Magnesium Company 1989 to present
Source: MSHA controller and operator history, updated weekly.

Marine Dolomite Mill sits in Tuolumne County, California, 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.
Tuolumne County, California · Population 54,873
0.3%
Mining share of county employment
$72,259
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
No fatalities recorded at this mine.

Reportable incidents

3 on file

1993 · 1 incident

January 20, 1993 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Marine Magnesium Company · Over-exertion in lifting objects

DUST COLLECTOR DUST AND GRAVEL WAS BEING SHOVELED ACROSS A LOADER BUCKET TO LEVEL THE LAD. THE BUCKET WAS IN A RASED POSITION AND THE EMPLOYEE WAS USING A TWISTING MOTION AS HE WAS SHOVELING.

1992 · 1 incident

March 26, 1992 CA · Metal/Non-Metal master mechanic, foreman, supervisor HANDTOOLS (NONPOWERED)
Marine Magnesium Company · Struck by flying object

SECURING A SECTION OF PLATE STEEL INSIDE THE ROTARY KILN WITH A WOODEN TIMBER AND HYDRAULIC JACK.THE TIMBER SPLINTERED UNDER PRESSURE CAUSING A PIECE OF THE3 TIMBER TO STRIKE THE EMPLOYEE IN T HE RIGHT ARM(ELBOW).

1991 · 1 incident

September 11, 1991 CA · Metal/Non-Metal dryer operator, kiln operator, dry plant operator, fluid operator, bed dryer operator HANDLING OF MATERIALS
Marine Magnesium Company · Caught in, under or between (Not Elsewhere Classified)

REMOVING TRUNNION ROLLER FROM ROTARY COOLER, EE WAS MANUALLY HANDLING GREASY ROLLER. GREASY TRUUNNION ROLLER SLIPPED AND PINCHED FINGER ON METAL PIER.