Alpine Silica-San Antonio
MSHA mine ID 4105426 · Bexar County, TX
- Operator
- Alpine Silica, LLC
- Controller
- Pro Frac Holding Corp
- Mine status
- Active since Oct 1, 2019
- Mine type
- Surface
- Primary commodity
- Sand, Industrial NEC
- Citations issued
- Apr 10, 2025 to Oct 5, 2026
Past 24 months at a glance
- Inspections
- 6
- Citations and orders
- 27
- Marked S&S by MSHA
- 8
- Assessed penalties
- $10,406
14 of 27 citations have an MSHA assessment so far, first proposed at $10,406. 0 are marked contested.
Citations by standard
The 30 CFR section MSHA cited, most cited first.
| Standard | Citations | Assessed |
|---|---|---|
| 56.18002(a) | 2 | $0 |
| 56.20011 | 2 | $2,009 |
| Not listed | 2 | $0 |
| 46.9(a) | 1 | $151 |
| 46.9(b)(5) | 1 | $0 |
| 46.9(d)(1) | 1 | $151 |
| 50.20(a) | 1 | $151 |
| 56.11001 | 1 | $0 |
| 56.11012 | 1 | $151 |
| 56.12005 | 1 | $0 |
| 56.12008 | 1 | $366 |
| 56.12018 | 1 | $465 |
| 56.14100(a) | 1 | $151 |
| 56.14100(b) | 1 | $0 |
| 56.14100(c) | 1 | $0 |
| 56.14101(a)(2) | 1 | $0 |
| 56.14112(b) | 1 | $642 |
| 56.14206(b) | 1 | $0 |
| 56.14207 | 1 | $0 |
| 56.15005 | 1 | $0 |
| 56.18002(b) | 1 | $151 |
| 56.20003(a) | 1 | $151 |
| 56.20003(b) | 1 | $151 |
| 56.9317 | 1 | $5,716 |
Latest citations
| Issued | Assessed |
|---|---|
| Oct 5, 2026 No. 5007978 56.18002(a) | Not yet assessed |
| Oct 5, 2026 No. 5007977 56.18002(a) | Not yet assessed |
| Oct 5, 2026 No. 5007976 56.15005 | Not yet assessed |
| Sep 23, 2026 No. 9748309 56.14101(a)(2) | Not yet assessed |
| Sep 23, 2026 No. 9748308 56.12005 | Not yet assessed |
| Sep 23, 2026 No. 9748307 46.9(b)(5) | Not yet assessed |
| Sep 22, 2026 No. 9748306 56.14206(b) | Not yet assessed |
| Sep 22, 2026 No. 9748305 56.14207 | Not yet assessed |
| Sep 22, 2026 No. 9748304 56.14100(c) | Not yet assessed |
| Sep 22, 2026 No. 5170346 56.11001 | Not yet assessed |
| Sep 22, 2026 No. 5170345 56.14100(b) | Not yet assessed |
| May 27, 2026 No. 5007984 50.20(a) | $151 Received |
| May 27, 2026 No. 5007983 56.20011 | $883 Received |
| May 27, 2026 No. 5007982 56.20011 | $1,126 Received |
| May 27, 2026 No. 5007981 56.18002(b) | $151 Received |
| May 27, 2026 No. 5007980 46.9(a) | $151 Received |
| May 27, 2026 No. 5007979 46.9(d)(1) | $151 Received |
| Mar 28, 2026 No. 5172680 Standard not listed | Not yet assessed |
| Mar 17, 2026 No. 5007950 56.12018 | $465 Received |
| Nov 13, 2025 No. 5006456 56.20003(a) | $151 Closed |
| Nov 12, 2025 No. 5006455 56.20003(b) | $151 Closed |
| Jul 9, 2025 No. 9994692 56.14100(a) | $151 Closed |
| Jul 9, 2025 No. 9994691 56.14112(b) | $642 Closed |
| Jul 8, 2025 No. 9994690 56.9317 | $5,716 Closed |
| Jul 8, 2025 No. 9994689 Standard not listed | Not yet assessed |
Latest inspections
Regular Safety and Health Inspection
Event F03BB5E
Sep 21, 2026 to Sep 29, 2026
Spot Inspection
Event F031F13
May 26, 2026 to May 29, 2026
Fatal Accident Investigation
Event F0370F9
Mar 28, 2026
Spot Inspection
Event F031F01
Mar 16, 2026 to Mar 17, 2026
Regular Safety and Health Inspection
Event F030A72
Nov 12, 2025 to Nov 14, 2025
Regular Safety and Health Inspection
Event F015E60
Apr 10, 2025 to Jul 9, 2025
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About this record
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