Mining Incidents

Silica Services Mining, LLC Metal/Non-Metal

Sanders, Apache County, AZ  ·  Active
MSHA Mine ID: 0203270

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Fatalities
0
Total incidents
50
Years on record
2011–2026
Latest incident
Jan 2026
Compliance record
MSHA citations since 2011
219
citations
66
significant & substantial
$173,423
proposed penalties
$131,281
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 63,075 3 0 47.6
2025 Q3 68,754 0 0 0.0
2025 Q2 59,146 0 0 0.0
2025 Q1 53,815 0 0 0.0
2024 Q4 56,409 1 0 17.7
2024 Q3 44,016 1 0 22.7
2024 Q2 45,320 0 0 0.0
2024 Q1 42,653 4 1 93.8
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

50 on file

2026 · 2 incidents

January 20, 2026 AZ · Metal/Non-Metal miner, prospector, nec HANDLING OF MATERIALS
Silica Services Mining, LLC · Over-exertion in wielding or throwing objects

Employee was shoveling sand when they bent down to get more sand with shovel, they twisted their back and continued until it worsened.

January 19, 2026 AZ · Metal/Non-Metal miner, prospector, nec SLIP OR FALL OF PERSON
Silica Services Mining, LLC · Fall to the walkway or working surface

Employee was performing housekeeping duties to mitigate slip hazards of ice and ended up slipping on that ice, resulting in a fall on their left knee. Employee refused medical treatment and continued work the remainder of the day. Employee woke the next morning with a swollen knee.

2025 · 6 incidents

December 18, 2025 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Silica Services Mining, LLC · Struck by... (Not Elsewhere Classified)

Employee was removing a motor and agitator from flocculant machine, when lifting it out it started to slip forward and employee tried to catch it, upon doing so the guard caught the palm of EE's hand cutting it, requiring 5 stiches. Employee was not wearing gloves.

December 9, 2025 AZ · Metal/Non-Metal miner, prospector, nec HANDTOOLS (NONPOWERED)
Silica Services Mining, LLC · Fall to the walkway or working surface

Employee was installing a door on an elevated building, they used a dead blow hammer to help knock door frame in place, when they hit the door frame the door bounced back and upon trying to catch the door they fell backwards and sprained right ankle when catching.

October 27, 2025 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Silica Services Mining, LLC · Over-exertion in wielding or throwing objects

Employee was utilizing a shovel to clean around plant when they strained their back.

September 11, 2025 AZ · Metal/Non-Metal utility man, shift tech, service/dump truck operator HANDLING OF MATERIALS
Silica Services Mining, LLC · Rubbed or abraded

After completion of maintenance work on an elevated area, the employee was lowering a tool bucket down with a rope, the tail end of the rope became entangled in a shaft pulling the rope tight and cutting employees right ring finger.

March 3, 2025 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Silica Services Mining, LLC · Over-exertion (Not Elsewhere Classified)

Employee was walking over scrap metal in laydown when EE lost footing and when EE landed on right foot EE felt a pain in the bottom of foot.

January 20, 2025 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Silica Services Mining, LLC · Over-exertion (Not Elsewhere Classified)

Employee was cleaning around plant when they slipped on ice and pulled a leg muscle.

2024 · 6 incidents

October 18, 2024 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Silica Services Mining, LLC · Fall from machine

Employee was exiting a semi truck at end of shift with lunch bag in one hand and paperwork in the other while stepping down, EE felt a sharp pain in left knee upon slipping on the bottom step resulting in falling to the ground landing on left foot then the right. EE has an injury to left knee.

October 18, 2024 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDTOOLS (NONPOWERED)
Silica Services Mining, LLC · Struck by... (Not Elsewhere Classified)

While cutting a storage sand bag downwards with a pocket knife in right hand, EE was holding bag and stretching with left hand. The knife became stuck and upon applying more pressure to cut, it became free and struck the left thumb cutting the tip and requiring stitches.

June 27, 2024 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator OTHER
Silica Services Mining, LLC · Bodily reaction, (Not Elsewhere Classified)

Employee was cutting a plastic bag with a knife, upon cutting downward EE knelt down to finish the cut. When EE stood back up, EE felt a pop in the right knee.

June 4, 2024 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Silica Services Mining, LLC · Over-exertion (Not Elsewhere Classified)

Employee was stepping out of a building onto a ramp and twisted right ankle resulting in a sprain.

May 20, 2024 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Silica Services Mining, LLC · Caught in, under or between a moving and a stationary object

A driver was unloading a trailer onto a portable conveyor belt, upon doing so slipped and fell onto conveyor while opening gate. EE's right foot became wedged between conveyor and frame, fracturing EE's right ankle.

January 14, 2024 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Silica Services Mining, LLC · Fall from machine

Employee was climbing down (backwards) a step ladder attached to a machine. When stepping on the bottom rung, EE's left foot slipped forward and EE fell backwards landing on EE's rear end. Employee did not utilize 3-points of contact.

2023 · 3 incidents

October 15, 2023 AZ · Metal/Non-Metal outside foreman, leadman HANDLING OF MATERIALS
Silica Services Mining, LLC · Over-exertion in lifting objects

Employee was picking up a 2"x4" board when EE felt a pop in EE's lower back. Resulting in a muscle strain.

October 13, 2023 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Silica Services Mining, LLC · Over-exertion in lifting objects

Employee was shoveling sand while standing in an awkward position when EE felt a pain under EE's right shoulder. Resulting in a Muscle strain.

January 31, 2023 AZ · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Silica Services Mining, LLC · Struck by falling object

EE was operating a stand behind skid steer and it became stuck in the mud. When backing it out, the skid steer bounced on the tracks and EE fell off landing on their feet and the standing plate of the skid steer landed on top of EE's left foot.

2022 · 5 incidents

August 16, 2022 AZ · Metal/Non-Metal ball/rod/pebble/hand/limestone/dry mill operator, roller operator SLIP OR FALL OF PERSON
Silica Services Mining, LLC · Over-exertion (Not Elsewhere Classified)

EE was walking to dewatering plant and stepped on rock resulting in a left sprained ankle.

May 11, 2022 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
Silica Services Mining, LLC · Struck by flying object

EE was was performing a vehicle inspection under vehicle, troubleshooting wires when a gust of wind came and blew sand under the vehicle. As a result sand got into left eye. Overnight irritation got worse and the next day they sought medical attention. The doctor prescribed an eye drop to help with irritation.

February 6, 2022 AZ · Metal/Non-Metal dry screening plant operator, screen house operator SLIP OR FALL OF PERSON
Silica Services Mining, LLC · Over-exertion (Not Elsewhere Classified)

While walking a belt line checking on the conveyors Employee stepped between two blocks of ice and twisted left inside ankle.

February 5, 2022 AZ · Metal/Non-Metal utility man, shift tech, service/dump truck operator POWERED HAULAGE
Silica Services Mining, LLC · Struck against a moving object

While operating a skid steer, EE was cleaning the floor of the truck scale when the bucket came into contact with a metal bar causing a sudden stop. Resulting in a soft tissue contusion to EE's chest.

January 6, 2022 AZ · Metal/Non-Metal utility man, shift tech, service/dump truck operator SLIP OR FALL OF PERSON
Silica Services Mining, LLC · Over-exertion (Not Elsewhere Classified)

EE was operating front end loader, EE stopped and was exiting loader on left side. Upon stepping off bottom rung of ladder, EE stepped on a frozen tire rut with EE's right foot and EE's ankle folded over spraining / tearing ligaments in right ankle.

2021 · 4 incidents

December 29, 2021 AZ · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor SLIP OR FALL OF PERSON
Silica Services Mining, LLC · Over-exertion (Not Elsewhere Classified)

EE had returned to work from an injury of a sprained right knee. While working near pump EE's right foot became stuck in the mud and when EE turned, it twisted and sprained the same right knee. Upon return to work EE resigned 01/04/2022.

December 19, 2021 AZ · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor SLIP OR FALL OF PERSON
Silica Services Mining, LLC · Over-exertion (Not Elsewhere Classified)

EE was looking up at plant while walking and stepped in a water hole spraining the right knee.

June 23, 2021 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Silica Services Mining, LLC · Struck by flying object

While repairing a dryer bearing, the maintenance person used a blow torch to cut a metal sleeve, followed by using a steel hammer to loosen and remove the sleeve. The heated and cooling metal shattered, causing small metal pieces to become airborne and embed the employee's left bicep.

June 23, 2021 AZ · Metal/Non-Metal outside foreman, leadman HANDTOOLS (NONPOWERED)
Silica Services Mining, LLC · Struck by flying object

While repairing a dryer bearing, the maintenance person used a blow torch to cut a metal sleeve, followed by using a steel hammer to loosen and remove the sleeve. The heated and cooling metal shattered, causing small metal pieces to become airborne and embed the employee's left bicep. One stitch/suture applied after metal piece removal. No restrictions.

2020 · 1 incident

February 19, 2020 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Silica Services Mining, LLC · Fall from machine

While preparing to enter a cab driver's side, an employee fell back off the top step (31 inches from the ground) and landed on the ground. The employee may have hit the bottom step of another vehicle parked less than 5 feet away. The employee was diagnosed with a dislocated left shoulder and possible fractured left wrist.

2019 · 4 incidents

July 2, 2019 AZ · Metal/Non-Metal utility man, shift tech, service/dump truck operator HANDLING OF MATERIALS
Preferred Proppants, LLC · Struck by flying object

Peterbilt truck and trailer operator was removing tow cable used to pull truck out of sand by loader. Employee placed cable on the loader stepladder and released their hold on the cable with the right hand. The cable straightened and snapped back, hitting their left thumb. Initial symptoms were bruising and swelling.

May 30, 2019 AZ · Metal/Non-Metal utility man, shift tech, service/dump truck operator HANDLING OF MATERIALS
Preferred Proppants, LLC · Struck against stationary object

Employee grabbed onto edge of belt cover (sheet metal) to pull self up for inspection. Sharp edge of metal cut into employee's multiple right fingers. Most of the cuts were superficial, but one cut resulted in exposed tissue. The employee failed to use gloves and a nearby ladder.

April 16, 2019 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Preferred Proppants, LLC · Over-exertion (Not Elsewhere Classified)

While removing wheel chocks from a vehicle, the employee slipped in a sandy area and threw the wheel chocks. EE felt a slight pull in the lower back but did not feel pain and tightness until near the end of the shift. Injury reported @ 4:45pm; shift ended at 5pm.

February 11, 2019 AZ · Metal/Non-Metal utility man, shift tech, service/dump truck operator SLIP OR FALL OF PERSON
Preferred Proppants, LLC · Fall to the walkway or working surface

During a snowstorm, employee was outside and stepping down from a sidewalk/cement walkway onto a cement pad covered in snow. The employee slipped on ice under the snow and fell back, which resulted in a muscle strain in the left bicep. The employee is unsure if their bicep impacted the walkway they stepped off of.

2018 · 2 incidents

September 14, 2018 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Preferred Proppants, LLC · Struck by... (Not Elsewhere Classified)

In the process of cutting a steel pipe with a cutting torch, the metal popped out at the end of the cut, which caused the employee to sustain laceration in the left thumb.

January 1, 2018 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Preferred Proppants, LLC · Struck against a moving object

An employee was using a loader to do some cleanups, while going into the pile for a bucket, employee went into a dip on the road and the Operator was jolted around in employee's seat and which caused a muscle strain in employee's upper leg.

2017 · 7 incidents

December 18, 2017 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Preferred Proppants, LLC · Over-exertion (Not Elsewhere Classified)

Mechanic pulled over to check fuel in the generator, while exiting from the fuel truck mechanic stepped on a broken step and sprained right ankle.

November 17, 2017 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Preferred Proppants, LLC · Over-exertion (Not Elsewhere Classified)

Employee slipped and fell on the driver's side excavator track while cleaning the windshield. While falling, they grabbed onto the grab bar and hit the right lower back on the excavator track. Injury consists of overextension of lower right back muscle, resulting from holding onto grab bar while falling and/or impact with track.

November 3, 2017 AZ · Metal/Non-Metal utility man, shift tech, service/dump truck operator HANDTOOLS (NONPOWERED)
Preferred Proppants, LLC · Caught in, under or between a moving and a stationary object

Employee was shoveling sand under a waste belt and caught employee's right pinky finger between the shovel handle and an angle iron (angled metal support) on the belt.

September 3, 2017 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Preferred Proppants, LLC · Absorption of radiations, caustics, toxic and noxious substances

While preparing to dispense hydraulic oil, the employee started the air compressor and was sprayed in the face with hydraulic oil, due to the handle left in the locked/on position and the nozzle left open. Employee was wearing safety glasses, but the hydraulic oil still got in employee's eyes.

September 1, 2017 AZ · Metal/Non-Metal miner, prospector, nec HANDLING OF MATERIALS
Preferred Proppants, LLC · Over-exertion in lifting objects

Conditions unknown. Injury reported at 6:00pm on 9/2/2017. Employee did not feel or notice anything during the prior night shift (9/1/2017). Upon waking the following afternoon, they noticed swelling, from the right elbow to the hand, and soreness.

April 1, 2017 AZ · Metal/Non-Metal outside foreman, leadman HANDLING OF MATERIALS
Preferred Proppants, LLC · Struck against stationary object

Employee doing first of the month task,(checking fire extinguishers). The employee was climbing to the deck of a 980K loader to check the fire extinguisher. While on ascent the employee hit their left knee injuring it.

2016 · 1 incident

May 3, 2016 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Preferred Proppants, LLC · Fall to the walkway or working surface

Employee climbed off ladder on John Deere 450 EX and lost footing when EE was on ground. EE fell on ground and hit head on the ground. The fall was not from an elevation but when EE was flat on ground.

2015 · 1 incident

April 22, 2015 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Preferred Sands Of Arizona LLC · Struck by... (Not Elsewhere Classified)

Wet Plant belt #2 employee laying on cat walk on conveyor trying to brush material off belt and pulley. Wire brush got caught and pulled into belt, employee let go of wire brush & hit fore arm on 2.5 inch angle iron.

2014 · 1 incident

October 31, 2014 AZ · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Preferred Sands Of Arizona LLC · Struck against a moving object

Employee driving a Volvo 180 loader hit 3 bumps in travel way and strained his back. Employee brought to ER and diagnosed with strain back and put on light duty.

2013 · 1 incident

July 24, 2013 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
Preferred Sands Of Arizona LLC · Bodily reaction, (Not Elsewhere Classified)

Employee was trying to locate a bolt on a CAT D6 Dozer and tweaked neck while looking for bolt in awkward position.

2012 · 4 incidents

October 11, 2012 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Preferred Sands Of Arizona LLC · Struck against stationary object

The employee was checking the oil on a CAT 980K and while running a rag down oil dip stick was impaled by a cable spur into his left index finger. He came immediately and reported the incident to Safety Coordinator. After looking at his finger they transported him via ambulance to RMCH in Gallup.

August 1, 2012 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Preferred Sands Of Arizona LLC · Absorption of radiations, caustics, toxic and noxious substances

The haul truck operator was operating the haul truck when he hit a bump in the road causing the fire extinguisher to momentarily discharge. The operator finished the rest of his shift for the day without complaint to his condition. The employee reported to work for his next scheduled shift and worked 6 hours before complaining of shortness of breath.

February 28, 2012 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Preferred Sands Of Arizona LLC · Over-exertion (Not Elsewhere Classified)

Worker kneeled down while shoveling and stretched his Achilles tendon.

January 23, 2012 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Preferred Sands Of Arizona LLC · Struck by... (Not Elsewhere Classified)

Employee was grinding a crack on an exhaust stack. Employee was wearing full face shield, hard hat, safety glasses and gloves. Grinder kicked back to hit his face shield and chin which resulted in a crack tooth.

2011 · 2 incidents

November 18, 2011 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Preferred Sands Of Arizona LLC · Struck by falling object

Employee was inspecting a chute while the plant was operating and an inspection cover fell and hit the employee on the left hand fracturing the bone on the back of his left hand.

August 13, 2011 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Preferred Sands Of Arizona LLC · Struck by falling object

Employee was replacing a section of pipe when the pipe slipped striking the employee in the left hand. Employee developed soreness in the left the following morning.