Copper Hills Silica Pit: 7 reportable incidents Metal/Non-Metal

Triple Nichol Inc · Surface

Controlled by Monty P Nichols

Gila County, AZ · Abandoned

MSHA Mine ID: 0200327

MSHA record for Copper Hills Silica Pit (mine ID 0200327). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.

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Fatalities: 0
Total incidents: 7
Years on record: 1984–1991
Latest incident: Jan 1991

Ownership history

Triple Nichol Inc 1950 to present

Source: MSHA controller and operator history, updated weekly.

Local economic context

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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.

Gila County, Arizona · Population 53,610

5.8%

Mining share of county employment

$59,089

Median household income

Source: US Census Bureau, American Community Survey 2023 5-year estimates.

No fatalities recorded at this mine.

Reportable incidents

7 on file

1991 · 1 incident

January 23, 1991 AZ · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor MACHINERY

Triple Nichol Inc · Struck by falling object

CUTTING PIECE OF METAL PIECE FELL FROM TRUCK & LANDED ON FOOT FX TOE

1989 · 1 incident

July 12, 1989 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)

Triple Nichol Inc · Struck against stationary object

KNOCKING BRIDGED MATERIAL OUT OF HOPPER WITH BAR.HIT THUMB AGAINST END OF GUARD RAIL AROUND SCREW.SMALL LACERATION ON LEFT THUMB.

1988 · 1 incident

June 3, 1988 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)

Triple Nichol Inc · Over-exertion (Not Elsewhere Classified)

PRYING ROCK WITH STEEL BAR HURT BACK

1987 · 1 incident

July 9, 1987 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator STEPPING OR KNEELING ON OBJECT

Triple Nichol Inc · Struck against stationary object

STEPPED ON ROCK3AND ROCK MOVED WHICH CAUSED HIS FOOT TO BUCKEL UNDER

1986 · 1 incident

February 14, 1986 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON

Triple Nichol Inc · Caught in, under or between (Not Elsewhere Classified)

HE WAS TRYING T2 CLEAR BELT OF ROCKS SLIPPED HIS HAND WENT BETWEEN PULLEY AND BELT.

1985 · 1 incident

December 20, 1985 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS

Triple Nichol Inc · Struck by... (Not Elsewhere Classified)

OPERATING CRUSH9R CONVEYOR LARGE ROCK SLIPPED FROM HAND & HIT ON LEFT WRIST-RESULTED IN BROKEN WRIST.

1984 · 1 incident

December 29, 1984 AZ · Metal/Non-Metal belt foreman, maintenance foreman, maintenance supervisor MACHINERY

Triple Nichol Inc · Struck by flying object

WHILE OPERATING DYE GRINDER - SPARK ENTERED EYE BETWEEN NOSE AND SAFETY GLASS. METAL LODGED RIGHT EYE.

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Copper Hills Silica Pit sits in Gila County, Arizona, where the Census mining category is 5.8% of county employment.