Mining Incidents

Arcosa ADAMS CLAIM #1850 Metal/Non-Metal

Controlled by Arcosa, Inc
Moundhouse, Lyon County, NV  ·  Active
MSHA Mine ID: 2600668

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Fatalities
0
Total incidents
25
Years on record
2000–2019
Latest incident
Nov 2019
Compliance record
MSHA citations since 2000
520
citations
151
significant & substantial
$708,301
proposed penalties
$477,644
paid to date
Source: MSHA violations data, updated weekly.
Quarterly safety rates
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2025 Q4 13,294 0 0 0.0
2025 Q3 12,439 0 0 0.0
2025 Q2 6,726 0 0 0.0
2025 Q1 5,383 1 1 185.8
2024 Q4 7,603 0 0 0.0
2024 Q3 9,908 0 0 0.0
2024 Q2 10,425 0 0 0.0
2024 Q1 6,685 7 2 1047.1
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

25 on file

2019 · 5 incidents

November 7, 2019 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Arcosa Specialty Mtls · Over-exertion in lifting objects

Employee was lifting rocks out of a crusher and felt a pain in back. Employee was taken for a medical evaluation and x-rays and was diagnosed to have muscle strain and returned to work. On 02/07/2020 the employee reported continued pain was sent back for medical evaluation and 02/10/2020 was given an epidural and instructed to be off till 02/14/2020.

October 15, 2019 NV · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker HANDLING OF MATERIALS
Arcosa Specialty Mtls · Caught in, under or between a moving and a stationary object

Employee was clearing a blockage in the oversize return chute from the inspection door when a large rock unexpectedly shifted smashing the right index finger between the rock and the inspection door frame .

October 7, 2019 NV · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Arcosa Specialty Mtls · Contact with hot objects or substances

Employee was removing old plate metal from a JCI screen chute for repairs using a cutting torch. Employee was wearing safety glasses and a face shield. While cutting the employee hit a pocket of dirt cause molten metal to splatter and blow out. A piece of splatter went under the employees face shield and safety glasses causing a burn to the employees right eye lid and cornea.

August 7, 2019 NV · Metal/Non-Metal miner, prospector, nec MACHINERY
Arcosa Specialty Mtls · Caught in, under or between running or meshing objects

EE was removing the screw cover for the bag house screw. After removing the bolts the EE discovered there was a tack tac weld. The EE took a 6" angle grinder to remove the weld as the wheel contacted the weld it kicked back striking the EE in the Right thigh causing a laceration.

June 13, 2019 NV · Metal/Non-Metal miner, prospector, nec STRIKING OR BUMPING
Arcosa Specialty Mtls · Struck against stationary object

while climbing off the return belt the employee cut EE's left middle finger on the tail of a hose clamp on the spray bar

2016 · 1 incident

November 4, 2016 NV · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
ACG Materials · Struck by falling object

Employee attempted to remove rocks from a jammed conveyor belt, ee states the rocks fell onto finger causing the crush injury with chip fracture.

2015 · 7 incidents

December 21, 2015 NV · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
ACG Materials · Over-exertion in lifting objects

During normal duties the miner was taking out the trash. He picked up a container of cigarette butts and waste material, when he felt a strain in his lower back.

August 31, 2015 NV · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
ACG Materials · Fall from machine

Miner was exiting haul truck, Terex TA400, when she let go before she got to the bottom of the ladder.

August 18, 2015 NV · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
ACG Materials · Struck against a moving object

Truck driver hit by drunk driver. Trucker swerved to avoid fatal accident, bruised right thumb/palm on shift tower. Accident happened on Highway 50 East in Silver Springs, NV.

August 14, 2015 NV · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer DISORDERS (REPEATED TRAUMA)
ACG Materials · (Not Elsewhere Classified)

Noise induced hearing loss

August 14, 2015 NV · Metal/Non-Metal electrician, lineman DISORDERS (REPEATED TRAUMA)
ACG Materials · (Not Elsewhere Classified)

Noise induced hearing loss

July 1, 2015 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
ACG Materials · Over-exertion in lifting objects

Miner was changing out the wear plate on an impact curtain. When lifting the new wear plate into place he felt a pain in his left groin. The miner reported the incident to his foreman, it didn't get reported further. On 9/8/15 the miner went to the ER for his injury, and reported his injury to Human Resources. Incident reported to safety on 12/4/15.

June 10, 2015 NV · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
ACG Materials · Struck by... (Not Elsewhere Classified)

Mechanic was using a 75 ton hydraulic press to press a bearing off of a drive shaft. The bearing was stuck, the miner turned around to get a can of P.B. Blast. When he heard a "pop". He turned back around and was struck in the face by a piece of the bearing race.

2011 · 2 incidents

August 17, 2011 NV · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
ACG Materials · Struck by... (Not Elsewhere Classified)

EE was performing serving of equipment. While servicing the 235 excavator the EE attempted to close the oil check door, it kicked back open and jammed the EE's left thumb. Injury was not serious, EE chose to wait for medical treatment. On 8/31/11 EE chose to accept medical treatment which then showed a tear in the tendon.

June 28, 2011 NV · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
ACG Materials · Over-exertion (Not Elsewhere Classified)

Employee was utilizing a 6' ladder leaned against the drivers side frame to access 2 battery solenoid boxes. When dismounting the ladder he stepped off the first rung in a backward pivoting motion. His right foot was at an angle & rolled upward as he stepped to the ground. The accident resulted in an unspecified ankle sprain.

2010 · 3 incidents

November 22, 2010 NV · Metal/Non-Metal assayer, geologist, metallurgist, engineer, engineer management HANDTOOLS (NONPOWERED)
ACG Materials · Fall to the walkway or working surface

Employee was removing melted snow and ice off of the walkway next to the truck scale. He lost his footing and fell impacting the ground on the right side of his body, resulting in a small closed fracture in the pelvic region. (Dr. said not serious.) Employee is moving around on crutches. (Employee was instructed not to shovel due to his age.)

August 31, 2010 NV · Metal/Non-Metal drill operator HANDLING OF MATERIALS
ACG Materials · Struck by rolling or sliding object

EE was working putting in a differential, after lifting the differential and lining it up, the nut wielded to the differential to stabilize the clevis assembly broke free causing the differential to fall hitting the corner of the pallet below it in return causing it to roll striking ee above the Rt knee. X-rays show no broken bones or limbs. Release the next day.

April 19, 2010 NV · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
ACG Materials · Caught in, under or between running or meshing objects

Lock out tag out procedure was not followed. Miner got his right hand caught in between conveyor belt and slide rollers.

2006 · 1 incident

October 17, 2006 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
ACG Materials · Caught in, under or between a moving and a stationary object

Jaw crusher operator was attempting to dislodge a stone wedged at the crusher jaw throat. While attempting to manually move the stone, another stone slid down the attached grizzly, crushing the employees right hand between the two stones. Employee sustained injury to three fingers on rt hand, with amputation necessary at hospital on first two joints of rt ring finger.

2003 · 1 incident

March 6, 2003 NV · Metal/Non-Metal welder (shop) DISORDERS (PHYSICAL AGENTS)
ACG Materials · Flash burns (welding)

EE AWOKE @ 2AM 3/6/03 WITH BURNING PAIN IN BOTH EYES & WAS TAKEN TO NORTHERN NEVADA MEDICAL CENTER BY HIS WIFE. INJURY IS FROM FLASH BURN - COMMON TO WELDERS AND HE WAS GIVEN PAIN MEDICATION, EYE DROPS AND MEDICATED OINTMENT.

2000 · 5 incidents

July 20, 2000 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
ACG Materials · Struck by... (Not Elsewhere Classified)

WHILE HOLDING CVHAIN, WITH METAL WEDGE ATTACHED, CHAIN WAS PULLED FROM HANDS BY A LARGE ROCK IN THE JAW CRUSHER.

May 18, 2000 NV · Metal/Non-Metal mine manager, mine foreman, mine owner MACHINERY
ACG Materials · Struck by... (Not Elsewhere Classified)

WHILE BLAST HOLE DRILLING AND MOVING ROCKS, A ROCK ROLLED DOWN AND PINCHED HAND.

April 28, 2000 NV · Metal/Non-Metal truck driver SLIP OR FALL OF PERSON
ACG Materials · Fall to lower level, (Not Elsewhere Classified)

WHILE WALKING ON DRIVE ABOVE GRID, EMLOYEE FELL THROUGH GRID.

April 25, 2000 NV · Metal/Non-Metal truck driver OTHER
ACG Materials · (Not Elsewhere Classified)

UNK CIRCUMSTANCES AT THIS TIME-DRIVER DECEASED ON SCENE-POSSIBLE HEART ATTACK NO OTHER VEHICLESINVOLVED-NO OTHER INJURINES

April 3, 2000 NV · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
ACG Materials · Caught in, under or between a moving and a stationary object

WHILE INSTALLING A HYDRAULIC CYLINDER ON A TRUCK/TRAILER. THE CYLINDER SLIPPED CATCHING THE 3RD FINGER ON LEFT HAND BETWEEN THE TWO METAL SURFACES.