UNIMIN CORPORATION
1300 CAMINO DIABLO ROAD, BYRON, CA 94514 · NAICS 212322 Industrial Sand Mining
Having inspection records is common for businesses in regulated industries. Data and methodology
Inspection records
Feb 3, 2011#314445412Feb 3, 2011Planned (H) · Complete scope, Safety#314445412$5252 viol.2 violations$525 in penalties
Inspection #314445412
Dates
- Opened
- Feb 3, 2011
- Closing Conference Date
- Feb 16, 2011
- Closed
- May 16, 2014
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- Yes
- Number of Employees
- 19
Violations and Penalties
- Total Violations
- 2
- Violation Types
- 2 other-than-serious
- Initial Penalties
- $525
- Penalties on Record
- $525
- Site Address
- 1300 Camino Diablo Road, Byron, CA 94514
- Industry
- 212322 Industrial Sand Mining
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (2 of 2 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 4851 Arc Welding and Cutting OSHA citation code: 4851 D02 | Other | 1 | 1 | $300 | $300 | Feb 23, 2011 | - | - |
| 01002 | 7016 Haulage Vehicle, Construction and Maintenance OSHA citation code: 7016 I | Other | 1 | 1 | $225 | $225 | Feb 28, 2011 | - | - |
Feb 9, 2009#311725972Feb 9, 2009Planned (H) · Complete scope, Safety#311725972$1,2004 viol.4 violations$1,200 in penalties
Inspection #311725972
Dates
- Opened
- Feb 9, 2009
- Closing Conference Date
- Feb 19, 2009
- Closed
- May 21, 2009
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- Yes
- Number of Employees
- 19
Violations and Penalties
- Total Violations
- 4
- Violation Types
- 4 other-than-serious
- Initial Penalties
- $4,350
- Penalties on Record
- $1,200
- Site Address
- 100 Camino Diablo Road, Byron, CA 94514
- Industry
- 212321 Construction Sand and Gravel Mining
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (4 of 4 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 2340.24 Discontinued Circuits | Other | 1 | 1 | $300 | $150 | Mar 18, 2009 | - | - |
| 01002 | 2473.1 Conductors Entering Boxes, Cabinets, or Fittings OSHA citation code: 24730001 A | Other | 1 | 1 | $150 | $150 | Mar 18, 2009 | - | - |
| 01003 | 6151 Portable Fire Extinguishers OSHA citation code: 6151 C01 | Other | 1 | 1 | $300 | $300 | Mar 18, 2009 | - | - |
| 02001 | 3277 Fixed Ladders OSHA citation code: 3277 J01 | Other | 1 | 1 | $3,600 | $600 | Mar 24, 2009 | - | - |
Jul 16, 2008#311723258Jul 16, 2008Planned (H) · Complete scope, Safety#311723258$6202 viol.2 violations$620 in penalties
Inspection #311723258
Dates
- Opened
- Jul 16, 2008
- Closing Conference Date
- Jul 16, 2008
- Closed
- Feb 24, 2009
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- Yes
- Number of Employees
- 15
Violations and Penalties
- Total Violations
- 2
- Violation Types
- 2 other-than-serious
- Initial Penalties
- $620
- Penalties on Record
- $620
- Site Address
- 1300 Camino Diablo Road, Byron, CA 94514
- Industry
- 212322 Industrial Sand Mining
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (2 of 2 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 3214 Stair Rails and Handrails OSHA citation code: 3214 B | Other | 1 | 1 | $310 | $310 | Aug 28, 2008 | - | - |
| 01002 | 2340.17 Guarding of Energized Parts OSHA citation code: 23400017 A | Other | 2 | 3 | $310 | $310 | Aug 28, 2008 | - | - |
Jul 11, 2007#309993343Jul 11, 2007Planned (H) · Complete scope, Safety#309993343$00 viol.0 violations$0 in penalties
Inspection #309993343
Dates
- Opened
- Jul 11, 2007
- Closing Conference Date
- Jul 11, 2007
- Closed
- Jul 27, 2007
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- Yes
- Number of Employees
- 22
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 1300 Camino Diablo Road, Byron, CA 94514
- Industry
- 212322 Industrial Sand Mining
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Jul 11, 2006#309987436Jul 11, 2006Planned (H) · Complete scope, Safety#309987436$3351 viol.1 violation$335 in penalties
Inspection #309987436
Dates
- Opened
- Jul 11, 2006
- Closing Conference Date
- Jul 11, 2006
- Closed
- Oct 2, 2006
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- Yes
- Number of Employees
- 22
Violations and Penalties
- Total Violations
- 1
- Violation Types
- 1 other-than-serious
- Initial Penalties
- $335
- Penalties on Record
- $335
- Site Address
- 1300 Camino Diablo Road, Byron, CA 94514
- Industry
- 212322 Industrial Sand Mining
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (1 of 1 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 3234 Fixed Industrial Stairs OSHA citation code: 3234 E06 | Other | 1 | 1 | $335 | $335 | Aug 15, 2006 | - | - |
Oct 4, 2005#301147005Oct 4, 2005Planned (H) · Complete scope, Safety#301147005$00 viol.0 violations$0 in penalties
Inspection #301147005
Dates
- Opened
- Oct 4, 2005
- Closing Conference Date
- Oct 4, 2005
- Closed
- Oct 28, 2005
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- Yes
- Number of Employees
- 22
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 1300 Camino Diablo Road, Byron, CA 94514
- Industry
- 212322 Industrial Sand Mining
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Jul 29, 2004#301144473Jul 29, 2004Planned (H) · Complete scope, Safety#301144473$01 viol.1 violation$0 in penalties
Inspection #301144473
Dates
- Opened
- Jul 29, 2004
- Closing Conference Date
- Jul 29, 2004
- Closed
- Sep 15, 2004
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- Yes
- Number of Employees
- 23
Violations and Penalties
- Total Violations
- 1
- Violation Types
- 1 other-than-serious
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 1300 Camino Diablo Road, Byron, CA 94514
- Industry
- 212322 Industrial Sand Mining
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (1 of 1 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 3340 Accident Prevention Signs OSHA citation code: 3340 C03 A | Other | 2 | 1 | $0 | $0 | Aug 26, 2004 | - | - |
May 7, 2003#125693572May 7, 2003Planned (H) · Complete scope, Safety#125693572$01 viol.1 violation$0 in penalties
Inspection #125693572
Dates
- Opened
- May 7, 2003
- Closing Conference Date
- May 7, 2003
- Closed
- Jun 26, 2003
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- Yes
- Number of Employees
- 20
Violations and Penalties
- Total Violations
- 1
- Violation Types
- 1 other-than-serious
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 1300 Camino Diablo Road, Byron, CA 94514
- Industry
- 212322 Industrial Sand Mining
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (1 of 1 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 3241 Live Loads OSHA citation code: 3241 A | Other | 1 | 1 | $0 | $0 | Jun 11, 2003 | - | - |
Jan 11, 2002#125789693Jan 11, 2002Planned (H) · Complete scope, Safety#125789693$01 viol.1 violation$0 in penalties
Inspection #125789693
Dates
- Opened
- Jan 11, 2002
- Closing Conference Date
- Jan 25, 2002
- Final Order
- Jun 25, 2002
- Closed
- Jul 26, 2002
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- Yes
- Number of Employees
- 22
Violations and Penalties
- Total Violations
- 1
- Violation Types
- 1 other-than-serious
- Initial Penalties
- $225
- Penalties on Record
- $0
- Site Address
- 1300 Camino Diablo Road, Byron, CA 94514
- Industry
- 212322 Industrial Sand Mining
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (1 of 1 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 4851 Arc Welding and Cutting OSHA citation code: 4851 G | Other | 1 | 1 | $225 | $0 | Feb 26, 2002 | - | Jun 25, 2002 |
Apr 20, 1999#125772574Apr 20, 1999Planned (H) · Complete scope, Safety#125772574$01 viol.1 violation$0 in penalties
Inspection #125772574
Dates
- Opened
- Apr 20, 1999
- Closing Conference Date
- Apr 26, 1999
- Closed
- Jun 14, 1999
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- Yes
- Number of Employees
- 26
Violations and Penalties
- Total Violations
- 1
- Violation Types
- 1 other-than-serious
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 100 Camino Diablo Road, Byron, CA 94514
- Industry
- 212322 Industrial Sand Mining
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (1 of 1 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 2340.23 Openings (Repealed) | Other | 2 | 1 | $0 | $0 | Jun 3, 1999 | - | - |
Penalty amounts may differ from final amounts after settlement or judicial review. How to read these records
About these records
A company page groups inspections with the same normalized employer name, city and state; it is not a legal-entity identifier (how pages are grouped).
This page displays public OSHA enforcement data. Status text follows the DOL inspection record first and may include citation-level context when the inspection feed and citation records are out of sync. Penalty amounts shown reflect the latest penalty amounts on record in the DOL database and may differ from initial assessments or final amounts. This is not an official OSHA resource.
OSHA's public enforcement data does not publish a "guilty" or "not guilty" field for inspections. The closest outcome fields available are the citation counts, penalty amounts, contest dates, final-order dates, and the inspection close date shown on this page. How to interpret these status fields. How initial and current penalties are recorded.
OSHA may publish multiple citation rows in the same inspection with the same standard and penalty fields. Separate rows can still differ in OSHA metadata such as citation identifier, recorded instance count, exposed workers, or gravity value. Contest and Final Order columns show citation-level dates from OSHA's enforcement record. A dash means OSHA's record does not currently show that activity for the citation.
Understanding These Penalties
The maximum penalty for a serious violation in 2025 is $16,550 per violation. For willful violations, the range is $11,823 to $165,514. The current penalty column shows the latest amount on record in OSHA's database for each citation. When the current penalty differs from the initial penalty, OSHA's records show that the amount changed during the enforcement process, but this page does not determine the specific reason for each change. Penalty amounts are set by OSHA and adjusted annually for inflation.
16 inspections, 1992 to 2011. Each row is one inspection; point at or tap a row for its dates and totals.
Source: DOL OSHA enforcement data (inspections and violations), linked via activity_nr (exact government key).
Penalty changes: Amounts shown reflect what OSHA's enforcement record publishes. The reason for any change is not stated unless OSHA's record explicitly says so.
Short cases: When a case closed soon after it opened, the closed marker is drawn slightly to the right so both markers stay visible. Each row's card shows the exact dates.
Standards cited
Industry comparison
Mining (except Oil and Gas), 2,260 employers with OSHA inspections. Arithmetic from DOL records.