Employee was adjusting the trunnion bearings of the dryer drum. Employee in 102° weather started to feel hot/ill, notified supervisor. EE was then taken to a break room. First aid administered. Symptoms worsened, decided to take employee to the hospital. When employee was stood up, EE lost consciousness but regained it a moment later. Taken by ambulance for medical treatment.
Alpine Silica-Monahans: 163 MSHA citations Metal/Non-Metal
Alpine Silica-Monahans has $45K in proposed MSHA penalties and $266 outstanding across 2 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 22
- Years on record
- 2018–2024
- Latest incident
- Jul 2024
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This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.Alpine Silica-Monahans has $45K in proposed MSHA penalties and $266 outstanding across 2 contested dockets.
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Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.ⓘ
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.ⓘ
Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.- Settled 1 · 33%
- Stood as issued 2 · 67%
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Counts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.ⓘ
A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.| Docket | Decision | Judge | Year | Proposed / upheld |
|---|---|---|---|---|
| CENT 2019-0218 | Default | McCarthy | 2019 | $1K → $1K |
| CENT 2019-0002 | Settlement | Miller | 2019 | $429 → $129 |
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A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.Metal and nonmetal contaminants (personal samples)
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Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.
Last sampled: 2018-09-19, 7 years ago
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Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.- Quartz, respirable, >1% Qtz2
- Respirable dust, <.1mg1
Show the individual readings (3)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2018-09-19 | Quartz, respirable, >1% Qtz | 0.14 | Dry Screen Plant Operator | ||
| 2018-09-19 | Respirable dust, <.1mg | 0 | Sand Filler (Dry) | ||
| 2018-09-19 | Quartz, respirable, >1% Qtz | 0.13 | Sand Filler (Dry) |
Alpine Silica-Monahans recorded 0.00 reportable injury cases per 100 full-time workers in 2025.
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This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.| Year | total case rate | days-away | fatal |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 0.000 |
| 2024 | 2.75 | 0.00 | 0.000 |
| 2023 | 1.39 | 0.00 | 0.000 |
| 2022 | 3.30 | 1.10 | 0.000 |
| 2021 * | 2.02 | 0.00 | 0.000 |
| 2020 * | 0.00 | 0.00 | 0.000 |
| 2019 | 4.26 | 0.00 | 0.000 |
| 2018 | 3.88 | 2.22 | 0.000 |
- Alpine Monahans, LLC 2018 to 2024
- Alpine Silica LLC 2024 to present
| Year | Employees |
|---|---|
| 2026 | 45 |
| 2025 | 63 |
| 2024 | 65 |
| 2023 | 68 |
| 2022 | 72 |
| 2021 | 37 |
| 2020 | 31 |
| 2019 | 121 |
| 2018 | 144 |
Alpine Silica-Monahans sits in Ector County, Texas, where the Census mining category is 13.3% of county employment.
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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.ⓘ
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2026 Q2 | 23,243 | 0 | 0 | 0.0 |
| 2026 Q1 | 32,820 | 5 | 1 | 152.3 |
| 2025 Q4 | 31,587 | 0 | 0 | 0.0 |
| 2025 Q3 | 24,115 | 3 | 0 | 124.4 |
| 2025 Q2 | 40,824 | 0 | 0 | 0.0 |
| 2025 Q1 | 38,931 | 2 | 0 | 51.4 |
| 2024 Q4 | 38,856 | 2 | 2 | 51.5 |
| 2024 Q3 | 33,622 | 0 | 0 | 0.0 |
Show 26 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 41,073 | 12 | 0 | 292.2 |
| 2024 Q1 | 31,659 | 0 | 0 | 0.0 |
| 2023 Q4 | 25,047 | 7 | 3 | 279.5 |
| 2023 Q3 | 35,116 | 3 | 1 | 85.4 |
| 2023 Q2 | 37,129 | 0 | 0 | 0.0 |
| 2023 Q1 | 46,957 | 0 | 0 | 0.0 |
| 2022 Q4 | 49,690 | 5 | 1 | 100.6 |
| 2022 Q3 | 47,580 | 7 | 0 | 147.1 |
| 2022 Q2 | 46,369 | 19 | 5 | 409.8 |
| 2022 Q1 | 37,979 | 0 | 0 | 0.0 |
| 2021 Q4 | 34,130 | 0 | 0 | 0.0 |
| 2021 Q3 | 30,176 | 9 | 2 | 298.3 |
| 2021 Q2 | 25,239 | 0 | 0 | 0.0 |
| 2021 Q1 | 9,673 | 3 | 1 | 310.1 |
| 2020 Q4 | 4,003 | 0 | 0 | 0.0 |
| 2020 Q3 | 5,223 | 5 | 0 | 957.3 |
| 2020 Q2 | 18,466 | 0 | 0 | 0.0 |
| 2020 Q1 | 39,770 | 4 | 0 | 100.6 |
| 2019 Q4 | 50,039 | 0 | 0 | 0.0 |
| 2019 Q3 | 68,085 | 16 | 2 | 235.0 |
| 2019 Q2 | 81,754 | 2 | 0 | 24.5 |
| 2019 Q1 | 81,980 | 19 | 5 | 231.8 |
| 2018 Q4 | 83,494 | 0 | 0 | 0.0 |
| 2018 Q3 | 111,085 | 17 | 7 | 153.0 |
| 2018 Q2 | 104,839 | 0 | 0 | 0.0 |
| 2018 Q1 | 61,701 | 0 | 0 | 0.0 |
Reportable incidents
22 on file2024 · 2 incidents
Employee was in the control room preparing for shift change. Employee then noticed co-worker had a knife on the table and asked if EE could look at it. Co-worker handed the knife to the employee. EE ended up grabbing it wrongly by the blade, cutting self in the process. Laceration required 6 sutures to close the wound. Employee returned to duty after medical treatment.
2023 · 1 incident
Employee suffered foreign body in their eye when turning on a shop fan. The fan stirred up dust in the shop. Employee was wearing safety glasses. First aid was administered(eye wash) but EE still felt something in the eye and requested medical attention. Employee was given prescription eye drops and returned to work.
2022 · 3 incidents
An employee was walking in the chemical room to turn off a water hose being used to fill a tank when the employee slipped and fell on the concrete floor injuring back. The employee was diagnosed with nondisplaced left transverse process fractures at L3 and L4 vertebrae.
On 5/23/22 a maintenance employee was greasing trunnions on a sand dryer when EE felt something in EE's right eye. On 5/25/22 the eye continued to feel irritated, so EE sought medical treatment and a small piece of metal was removed from EE's eye.
An employee was trimming a dewatering screen panel with a razor knife when EE cut the tip of right index finger causing a laceration that required 5 sutures to repair.
2021 · 1 incident
Injured employee was pulling a water hose while cleaning up an area at the wet plant. While walking EE stepped on a sand pile causing EE to trip injuring EE's right knee and back. Employee was diagnosed with a sprained right knee and back and was given work restrictions.
2019 · 7 incidents
A heavy equipment operator was dismounting an excavator at the end of the shift. The bottom access step was covered in mud and caused the employee to slip and land awkwardly injuring left knee. On 11/5/2019 the employee was diagnosed with a sprained MCL and placed on restricted duty as a result of the original injury.
EE was walking across even ground and went to step up onto the truck scale (approx 12-18"). As EE began to lift self onto the platform, EE felt a pop in EE's left knee. Employee was seen by medical personnel the following day and was diagnosed with an unknown internal derangement of the left knee and placed on restriction.
Employee was taking off a hatch from a Bucket Elevator, when EE accidentally dropped it on EE's Right Foot. Initially it was diagnosed as a contusion type injury. Upon follow up evaluation, the Physician diagnosed it as a fracture of the 5th digit little toe. This diagnosis was made on 7/10/2019.
Employee slipped on some sand, straining back and right hand. The Employee was medically evaluated by a physician, X-Rays proved negative findings, and the Employee was prescribed muscle relaxants.
Employee was replacing a blower on line A when EE was struck on the head with an 18" aluminum pipe wrench that had been dropped from an upper level of approximately 35'- 40'
Contractor (MSHA ID: B9304) was in the process of changing out a valve and mufflers due to sand build-up. EE was in the process of unscrewing the valve from the air supply line when pressure in the valve propelled it striking the contractor on the left side of EE's face directly in the brow line causing an approximate 1.5" laceration.
On 4/10 EE reported pain in right wrist. On 4/12 EE diagnosed with repetitive use disorder. On or about 7/14/19 disorder determined to be work related. Surgery on 7/26/19.
2018 · 8 incidents
Employee was walking on regular QC Route and complained foot was hurting.
Employee was walking to raw feed area to collect a sample for quality control. While walking, employee tripped in mud and fell down. First aid was performed. Employee went to an occupational clinic on July 16, 2018, where employee was treated for a sprained right knee.
Plant operator stepped onto grating. The grating shifted, causing the operator to trip and fall. First aid was provided. Employee went to an occupational clinic on July 18, 2018, where ee was treated for a sprained right knee.
Diesel Exhaust Fluid splashed into miner's eye when removing the fueling nozzle. A medical review was performed on 8/22/18 that diagnosed the miner with chemical conjunctivitis and traumatic cataract of the left eye.
Dozer operator felt pain in EE's shoulder after driving EE's dozer into excavation.
Employee was walking down stairs when EE missed the last step and fell.
Employee was using a 4 lb hammer and hammer wrench to loosen bolts on a Rotex. While swinging the hammer it hit a junction box in close proximity and caused the hammer to impact their ring finger on the left hand. Impact caused open fracture with blow out laceration at the tip of the finger.
Employee was leaving flocculant building when employee slipped.