Mining Incidents

Diamond Shaft: 6 reportable incidents Metal/Non-Metal

Leadville Corp · Underground
Controlled by Risk Robert
Lake County, CO  ·  Abandoned
MSHA Mine ID: 0503883

MSHA record for Diamond Shaft (mine ID 0503883). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.

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Fatalities
0
Total incidents
6
Years on record
1987–1988
Latest incident
Oct 1988
Ownership history
  1. Leadville Corp 1983 to present
  2. C & S Mining Company 1983 to 1986
Source: MSHA controller and operator history, updated weekly.

Diamond Shaft sits in Lake County, Colorado, where the Census mining category is 3.4% 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.
Lake County, Colorado · Population 7,411
3.4%
Mining share of county employment
$93,655
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
No fatalities recorded at this mine.

Reportable incidents

6 on file

1988 · 2 incidents

October 31, 1988 CO · Metal/Non-Metal laborer, bull gang, parts runner, roustabout, roof trimmer/scaler DUST DISEASE OF LUNGS
Leadville Corp · Inhalation of radiations, caustics, toxic and noxious substances

EMP REPORTED ON 10-31-88 RESPIRATORY AILMENT

July 25, 1988 CO · Metal/Non-Metal HOISTING
Leadville Corp · Accident type, without injuries

HOISTING MUCK HOIST STALLED HALFWAY IN THE SHAFT THE CREW INVESTIGATED AND FOUND 2 GUIDES TORN UP

1987 · 4 incidents

December 15, 1987 CO · Metal/Non-Metal laborer, bull gang, parts runner, roustabout, roof trimmer/scaler FALL OF ROOF OR BACK
Leadville Corp · Struck by falling object

EMPL EXAMINING 7LEAN-UP SKIP IN THE BOTTOM OF THE SHAFT AND WAS STRUCK WITH ROCK OR PIECE OF ICE ON THE HEAD.

November 5, 1987 CO · Metal/Non-Metal mine manager, mine foreman, mine owner HOISTING
Leadville Corp · Struck against a moving object

GOING TO BOTTOM3OF SHAFT TO LOAD OUT SOME OLD TIMBERS CAGEHUNG ON 1-INCH AIR CONNECTION STOPPED CAGE HOES CONNECTION PULLED OFF & CAGE FELL A FEW FEET WHEN IT STOPPED EMPLOYEE FELL WITH BACK TO THE WALL 3

September 30, 1987 CO · Metal/Non-Metal HOISTING
Leadville Corp · Accident type, without injuries

LOWERING LOADER3INTO SHAFT.LOADER WEDGED AND SLACK CAME IN SLING.WHEN LOADER DISLODGED,SLACK LOAD ON SLING CAUSED IT TO BREAK.