MARTIN MARIETTA
12250 S. HWY 121, LITTLETON, CO 80127
Having inspection records is common for businesses in regulated industries. Data and methodology
Inspection records
Jun 15, 2017#342399672Jun 15, 2017Planned (H) · Partial scope, Safety#342399672$7,9325 viol.5 violations$7,932 in penalties
Inspection #342399672
Dates
- Opened
- Jun 15, 2017
- Closing Conference Date
- Jun 15, 2017
- Final Order
- Jul 31, 2017
- Closed
- Aug 14, 2017
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 8,000
Violations and Penalties
- Total Violations
- 5
- Violation Types
- 1 serious, 4 other-than-serious
- Initial Penalties
- $10,864
- Penalties on Record
- $7,932
- Site Address
- 9511 Titan Park Circle, Littleton, CO 80125
- Industry
- 327320 Ready-Mix Concrete Manufacturing
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 (5 of 5 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 1910.110 Storage and Handling of Liquefied Petroleum Gases OSHA citation code: 19100110 B06 I | Other | 1 | 16 | $5,432 | $2,500 | - | Jul 31, 2017 | |
| 01002A | 1910.215 Abrasive Wheel Machinery OSHA citation code: 19100215 A04 | Other | 1 | 5 | $5,432 | $5,432 | Jul 18, 2017 | - | Jul 31, 2017 |
| 01002B | 1910.215 Abrasive Wheel Machinery OSHA citation code: 19100215 B09 | Serious | 1 | 5 | $0 | $0 | Jul 18, 2017 | - | Jul 31, 2017 |
| 02001 | 1910.303 OSHA citation code: 19100303 G01 | Other | 1 | 16 | $0 | $0 | - | Jul 31, 2017 | |
| 02002 | 1910.1200 Hazard Communication OSHA citation code: 19101200 F05 II | Other | 1 | 16 | $0 | $0 | Jul 18, 2017 | - | Jul 31, 2017 |
Mar 22, 1993#109550921Mar 22, 1993Complaint (B) · Partial scope, Health#109550921$1,5002 viol.2 violations$1,500 in penalties
Inspection #109550921
Dates
- Opened
- Mar 22, 1993
- Closing Conference Date
- Apr 27, 1993
- Closed
- May 24, 1993
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- Yes
- Number of Employees
- 4,000
- Related Activity
- 1 complaint
Violations and Penalties
- Total Violations
- 2
- Violation Types
- 2 serious
- Initial Penalties
- $1,500
- Penalties on Record
- $1,500
- Site Address
- 12250 S. Hwy 121, Littleton, CO 80127
- Industry
- Not classified in OSHA's inspection record.
Complaint Inspection: This inspection record is categorized as a complaint inspection in the DOL OSHA enforcement data. OSHA can open complaint-driven inspections after receiving safety or health complaints from workers or their representatives.
Violations
Violation list (2 of 2 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001A | 1910.38 OSHA citation code: 19100038 A05 III | Serious | 1 | 10 | $1,500 | $1,500 | May 16, 1993 | - | - |
| 01001B | 1910.157 Portable Fire Extinguishers OSHA citation code: 19100157 G01 | Serious | 1 | 10 | $0 | $0 | May 16, 1993 | - | - |
Oct 27, 1992#109549147Oct 27, 1992Complaint (B) · Partial scope, Health#109549147$4,2502 viol.2 violations$4,250 in penalties
Inspection #109549147
Dates
- Opened
- Oct 27, 1992
- Closing Conference Date
- Dec 16, 1992
- Closed
- Feb 25, 1993
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 9,000
- Related Activity
- 1 complaint
Violations and Penalties
- Total Violations
- 2
- Violation Types
- 1 serious, 1 other-than-serious
- Initial Penalties
- $8,500
- Penalties on Record
- $4,250
- Site Address
- 12250 S. Hwy 121, Littleton, CO 80127
- Industry
- Not classified in OSHA's inspection record.
Complaint Inspection: This inspection record is categorized as a complaint inspection in the DOL OSHA enforcement data. OSHA can open complaint-driven inspections after receiving safety or health complaints from workers or their representatives.
Violations
Violation list (2 of 2 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 1910.1001 Asbestos OSHA citation code: 19101001 J02 I | Serious | 1 | 4 | $4,250 | $3,250 | Feb 5, 1993 | - | - |
| 01002 | 1910.1200 Hazard Communication OSHA citation code: 19101200 E02 II | Other | 1 | 4 | $4,250 | $1,000 | Feb 5, 1993 | - | - |
Mar 12, 1992#109547174Mar 12, 1992Complaint (B) · Partial scope, Health#109547174$00 viol.0 violations$0 in penalties
Inspection #109547174
Dates
- Opened
- Mar 12, 1992
- Closing Conference Date
- Apr 15, 1992
- Closed
- Apr 23, 1992
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 7,000
- Related Activity
- 3 complaints
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 12250 S. Hwy 121, Littleton, CO 80127
- Industry
- Not classified in OSHA's inspection record.
Complaint Inspection: This inspection record is categorized as a complaint inspection in the DOL OSHA enforcement data. OSHA can open complaint-driven inspections after receiving safety or health complaints from workers or their representatives.
Oct 5, 1990#100021104Oct 5, 1990Complaint (B) · Partial scope, Health#100021104$3001 viol.1 violation$300 in penalties
Inspection #100021104
Dates
- Opened
- Oct 5, 1990
- Closing Conference Date
- Dec 19, 1990
- Closed
- Mar 12, 1991
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- Yes
- Number of Employees
- 8,000
- Related Activity
- 1 complaint
Violations and Penalties
- Total Violations
- 1
- Violation Types
- 1 other-than-serious
- Initial Penalties
- $360
- Penalties on Record
- $300
- Site Address
- 12250 S. Hwy 121, Littleton, CO 80127
- Industry
- Not classified in OSHA's inspection record.
Complaint Inspection: This inspection record is categorized as a complaint inspection in the DOL OSHA enforcement data. OSHA can open complaint-driven inspections after receiving safety or health complaints from workers or their representatives.
Chemical Exposure Sampling7 substances sampled
Air monitoring samples collected by OSHA during this inspection. Results grouped by substance.
| Substance | Samples | Result Range | Unit |
|---|---|---|---|
| 2-Butanone | 6 | 0 - 4.5767 | ppm |
| Methyl Chloroform | 1 | 556.3791 | ppm |
| Methylene bisphenyl isocyanate | 4 | 0.0125 - 0.0348 | mg/m³ |
| Tin, organic compounds (as Sn) | 1 | 0 | mg/m³ |
| Toluene | 6 | 0.0973 - 0.9817 | ppm |
| Toluene-2,4-Diisocyanate (TDI) | 5 | 0 | mg/m³ |
| Toluene-2,6-Diisocyanate | 5 | 0 | mg/m³ |
Violations
Violation list (1 of 1 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001A | 1910.1200 Hazard Communication OSHA citation code: 19101200 F05 II | Other | 1 | 15 | $360 | $300 | Feb 11, 1991 | - | - |
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.
Source: OSHA chemical exposure sampling data (OSHA Information System). P = Personal (worker breathing zone), A = Area (general air). Rows marked QC are analytical quality control measurements, not chemical exposures. OSHA PEL (Permissible Exposure Limit) values from the OSHA Occupational Chemical Database, matched via IMIS substance code (analyte code) (exact government key).
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.
5 inspections, 1990 to 2017. 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
Chemical exposure sampling
Industry comparison
BLS 2024 survey: ready-mix concrete manufacturing reported 2.5 injuries and illnesses per 100 full-time workers (total recordable cases, national, private industry; relative standard error 11.0%; NAICS 32732 level). This is an industry-wide average from a federal survey, not a measurement of this establishment. Source