Establishment profile
MARTIN MARIETTA MATERIALS, INC.
444 E. 19TH AVE., DENVER, CO, 80203
Operated by MARTIN MARIETTA MATERIALS INC · 1 of 26 establishments
238110 — Poured Concrete Foundation and Structure Contractors
EIN 561848578
Summary
MARTIN MARIETTA MATERIALS, INC. has accumulated 2 OSHA violations across 1 inspection over 13 years of recorded history, with $4,900 in total assessed penalties.
The establishment sits in the 53rd percentile for violations within its industry-state peer group of 8,397 employers. The most recent enforcement activity was recorded 13 years ago.
Federal records were found in 3 of 15 sources. Sources without matching records returned empty for this establishment.
Agency coverage
MARTIN MARIETTA MATERIALS, INC. appears in OSHA workplace safety, MSHA mine safety, and NLRB labor relations records only. No matching records were found in WHD wage enforcement, EPA environmental compliance, OFLC visa and labor certification (historical), FMCSA motor carrier registration, SAM.gov federal debarment, CMS nursing home enforcement, UVA Corporate Prosecution Registry, CPSC product recalls, or NHTSA vehicle recalls.
OSHA workplace safety
100% of inspections at this establishment produced violations,
Most-cited OSHA standards
Top OSHA standards cited at this employer, ranked by citation count. Standards (CFR sections) cluster citations into safety themes -- machine guarding, lockout-tagout, hazard communication, fall protection, process safety, etc. A concentration on one or two sections reveals a pattern that individual citations don’t. 2 distinct standards shown · 2 citations in this view · $4,900 in penalties.
| CFR section | Citations | Inspections | Total penalty | First cited | Last cited |
|---|---|---|---|---|---|
| 29 CFR 1926.0020 B02 | 1 | 1 | $4,900 | Feb 2013 | Feb 2013 |
| 29 CFR 1926.0021 B02 | 1 | 1 | — | Feb 2013 | Feb 2013 |
Source: OSHA inspection citations (violation_detail). CFR section codes can be looked up at osha.gov/laws-regs for the formal standard text. Per-inspection detail and the specific violation descriptions are available by expanding individual inspections below.
Peer comparison
Above average violations in NAICS 2381 within CO. Peer group: 8,397 employers. This establishment has 2 OSHA violations; peer median is 1.
Safety self-report (OSHA 300A)
Recordable injury rates the employer filed with OSHA’s Injury Tracking Application. DART covers cases with days away, restricted, or transferred; TRIR is the total recordable case rate.
Reported for 132 average annual employees at this establishment.
Source: OSHA ITA Form 300A (employer self-reported). Rates are per 100 full-time equivalent workers. Establishments below the ~10-FTE threshold are not required to report.
Industry benchmark
BLS rates reflect industry-wide averages. Self-reported figures come from OSHA’s Injury Tracking Application; absence of self-reported data does not necessarily indicate non-compliance — many establishments fall below the ITA reporting threshold.
Inspection breakdown
Complaint- and accident-triggered inspections are stronger risk signals than routine planned inspections.
OSHA severe injury reports
No severe injury reports (hospitalization, amputation, or loss of an eye) on file under 29 CFR 1904.39 for MARTIN MARIETTA MATERIALS, INC.. Verify directly with Occupational Safety and Health Administration →
Activity timeline
No federal enforcement activity has been recorded against this establishment in 13+ years. Most recent activity: 13 years ago. Data on this page is refreshed weekly.
Wage & Hour Division (WHD)
No WHD wage, overtime, or child-labor enforcement cases on file for MARTIN MARIETTA MATERIALS, INC.. Verify directly with Wage and Hour Division →
Mine safety (MSHA)
Company-level in CO — for MARTIN MARIETTA MATERIALS INC, not this location alone
Mine Safety & Health Administration — citations issued at mining operations. MSHA records cases at the company/regional level (no worksite address), so these are matched by company name and state and may span other MARTIN MARIETTA MATERIALS INC operations in the same state.
MSHA citations
Mine Safety and Health Administration citations. S&S (significant and substantial) marks violations that could reasonably contribute to a serious injury. Negligence rating is MSHA’s operator-culpability assessment (none, low, moderate, high, or reckless disregard). Proposed = assessed at issuance; Paid = post-settlement / appeal. 100 citations · 61S&S · $292,783 proposed / $239,374 paid.
| Citation | Mine | Date | Section | S&S | Negligence | Proposed | Paid |
|---|---|---|---|---|---|---|---|
| 9824421 | Riverbend Sand and Gravel Weld, CO | Apr 2024 | — | Yes | ModNegligence | $66,200 | $40,000 |
| 9824420 | Riverbend Sand and Gravel Weld, CO | Apr 2024 | — | Yes | ModNegligence | $66,200 | $40,000 |
| 9824419 | Riverbend Sand and Gravel Weld, CO | Apr 2024 | — | Yes | HighNegligence | $66,200 | $66,200 |
| 9303611 | Parkdale Quarry Fremont, CO | Mar 2017 | — | Yes | HighNegligence | $18,014 | $18,014 |
| 9304072 | FOUNTAIN PIT El Paso, CO | Apr 2017 | — | Yes | HighNegligence | $13,081 | $13,081 |
| 9303613 | Parkdale Quarry Fremont, CO | Mar 2017 | — | No | HighNegligence | $3,636 | $3,636 |
| 9303612 | Parkdale Quarry Fremont, CO | Mar 2017 | — | No | HighNegligence | $3,636 | $3,636 |
| 8587135 | Riverbend Sand and Gravel Weld, CO | Jun 2022 | — | Yes | HighNegligence | $3,546 | $3,546 |
| 9902955 | Red Canyon Quarry Fremont, CO | May 2024 | — | Yes | ModNegligence | $2,504 | $2,504 |
| 8761696 | NORTHERN PORTABLE PLANT #15 Garfield, CO | Oct 2014 | — | Yes | HighNegligence | $1,657 | $1,657 |
| 8761695 | NORTHERN PORTABLE PLANT #15 Garfield, CO | Oct 2014 | — | Yes | HighNegligence | $1,657 | $1,657 |
| 8761652 | Northern Portable Plant #19 Weld, CO | Aug 2014 | — | Yes | HighNegligence | $1,657 | $1,657 |
| 8761621 | Northern Portable Plant #4 Larimer, CO | Jul 2014 | — | Yes | HighNegligence | $1,657 | $1,657 |
| 8761620 | Northern Portable Plant #4 Larimer, CO | Jul 2014 | — | Yes | HighNegligence | $1,657 | $1,657 |
| 9650216 | Parkdale Quarry Fremont, CO | May 2021 | — | No | ModNegligence | $1,500 | $1,500 |
| 8838393 | FOUNTAIN PIT El Paso, CO | Nov 2016 | — | Yes | ModNegligence | $1,484 | $1,484 |
| 9656874 | Spec Agg Quarry Jefferson, CO | Jun 2022 | — | Yes | LowNegligence | $1,358 | $1,358 |
| 9902864 | Walstrum Quarry Clear Creek, CO | Jul 2024 | — | Yes | LowNegligence | $1,220 | $547 |
| 9902863 | Walstrum Quarry Clear Creek, CO | Jul 2024 | — | Yes | ModNegligence | $1,220 | $1,220 |
| 8938753 | Parkdale Quarry Fremont, CO | Mar 2016 | — | Yes | HighNegligence | $1,026 | $1,026 |
| 9348356 | Spec Agg Quarry Jefferson, CO | Jan 2020 | — | Yes | ModNegligence | $994 | $994 |
| 8838776 | Red Canyon Quarry Fremont, CO | Jun 2018 | — | Yes | ModNegligence | $953 | $953 |
| 9341375 | Red Canyon Quarry Fremont, CO | Dec 2017 | — | No | HighNegligence | $953 | $953 |
| 9397772 | Parkdale Quarry Fremont, CO | Dec 2019 | — | Yes | ModNegligence | $918 | $918 |
| 6446121 | Spec Agg Quarry Jefferson, CO | Jun 2017 | — | Yes | ModNegligence | $862 | $862 |
| 8938752 | Parkdale Quarry Fremont, CO | Mar 2016 | — | Yes | HighNegligence | $687 | $687 |
| 8938751 | Parkdale Quarry Fremont, CO | Mar 2016 | — | Yes | ModNegligence | $687 | $687 |
| 8939306 | Parkdale Quarry Fremont, CO | Jan 2016 | — | Yes | HighNegligence | $687 | $687 |
| 9303625 | Penrose Ranch Gravel Pit Fremont, CO | Apr 2017 | — | Yes | ModNegligence | $677 | $677 |
| 8831099 | FOUNTAIN PIT El Paso, CO | Dec 2014 | — | Yes | ModNegligence | $651 | $651 |
| 9341379 | Northern Portable Plant #19 Weld, CO | Jan 2018 | — | Yes | HighNegligence | $638 | $638 |
| 9341374 | Red Canyon Quarry Fremont, CO | Dec 2017 | — | Yes | LowNegligence | $638 | $638 |
| 9303678 | Greeley 35th Sand and Gravel Weld, CO | Oct 2017 | — | Yes | ModNegligence | $625 | $625 |
| 9346602 | Red Canyon Quarry Fremont, CO | Aug 2017 | — | No | ModNegligence | $625 | $625 |
| 9478079 | Northern Portable Plant #17 Larimer, CO | Apr 2021 | — | Yes | ModNegligence | $622 | $622 |
| 9348006 | Spec Agg Quarry Jefferson, CO | Mar 2018 | — | Yes | ModNegligence | $589 | $589 |
| 8831627 | NORTHERN PORTABLE PLANT #3 Larimer, CO | May 2015 | — | Yes | ModNegligence | $585 | $585 |
| 8831551 | Northern Portable Plant #12 Larimer, CO | Feb 2015 | — | Yes | ModNegligence | $585 | $585 |
| 9397644 | Red Canyon Quarry Fremont, CO | Jun 2019 | — | No | HighNegligence | $558 | $558 |
| 9397642 | Red Canyon Quarry Fremont, CO | Jun 2019 | — | No | HighNegligence | $558 | $558 |
| 9827561 | Walstrum Quarry Clear Creek, CO | Jan 2025 | — | Yes | ModNegligence | $549 | $549 |
| 9346282 | Riverbend Sand and Gravel Weld, CO | Dec 2017 | — | No | HighNegligence | $544 | $544 |
| 8761653 | Northern Portable Plant #19 Weld, CO | Aug 2014 | — | Yes | ModNegligence | $540 | $540 |
| 8761646 | Northern Portable Plant #11 Eagle, CO | Jul 2014 | — | Yes | ModNegligence | $540 | $540 |
| 8761441 | Northern Portable Plant #17 Larimer, CO | Apr 2014 | — | Yes | ModNegligence | $540 | $540 |
| 8761650 | Northern Portable Plant #10 Otero, CO | Aug 2014 | — | Yes | ModNegligence | $499 | $499 |
| 8761647 | Northern Portable Plant #4 Larimer, CO | Jul 2014 | — | Yes | ModNegligence | $499 | $499 |
| 8754474 | NORTHERN PORTABLE PLANT #15 Garfield, CO | Nov 2013 | — | Yes | ModNegligence | $499 | $499 |
| 8938758 | Parkdale Quarry Fremont, CO | Mar 2016 | — | No | HighNegligence | $460 | $460 |
| 9303616 | Northern Portable Plant #12 Larimer, CO | Mar 2017 | — | No | HighNegligence | $453 | $453 |
| 9303615 | Northern Portable Plant #17 Larimer, CO | Mar 2017 | — | No | HighNegligence | $420 | $420 |
| 9729212 | Rich Pit Pueblo, CO | Apr 2023 | — | Yes | ModNegligence | $407 | $407 |
| 9729210 | Rich Pit Pueblo, CO | Apr 2023 | — | Yes | ModNegligence | $407 | $407 |
| 9397212 | Parkdale Quarry Fremont, CO | Nov 2018 | — | Yes | ModNegligence | $395 | $395 |
| 9397211 | Parkdale Quarry Fremont, CO | Nov 2018 | — | Yes | ModNegligence | $395 | $395 |
| 9347063 | Spec Agg Quarry Jefferson, CO | Mar 2018 | — | Yes | ModNegligence | $395 | $395 |
| 8931989 | Northern Portable Plant #12 Larimer, CO | Dec 2015 | — | No | HighNegligence | $392 | $392 |
| 9656753 | Rich Pit Pueblo, CO | Apr 2022 | — | Yes | ModNegligence | $378 | $378 |
| 6947773 | Spec Agg Quarry Jefferson, CO | Dec 2025 | — | No | HighNegligence | $366 | $366 |
| 5051142 | Riverbend Sand and Gravel Weld, CO | May 2025 | — | No | HighNegligence | $366 | $366 |
| 9304071 | FOUNTAIN PIT El Paso, CO | Apr 2017 | — | No | ModNegligence | $356 | $356 |
| 9476496 | Parkdale Quarry Fremont, CO | Nov 2020 | — | No | ModNegligence | $351 | $351 |
| 9728272 | Spec Agg Quarry Jefferson, CO | Apr 2026 | — | Yes | ModNegligence | $336 | — |
| 9346755 | Spec Agg Quarry Jefferson, CO | Sep 2018 | — | Yes | LowNegligence | $336 | $336 |
| 9348004 | Spec Agg Quarry Jefferson, CO | Mar 2018 | — | No | HighNegligence | $336 | $336 |
| 9347059 | Spec Agg Quarry Jefferson, CO | Mar 2018 | — | No | ModNegligence | $336 | $336 |
| 8761651 | Northern Portable Plant #10 Otero, CO | Aug 2014 | — | No | HighNegligence | $334 | $334 |
| 8761649 | Northern Portable Plant #10 Otero, CO | Aug 2014 | — | No | HighNegligence | $334 | $334 |
| 8761622 | Northern Portable Plant #4 Larimer, CO | Jul 2014 | — | No | HighNegligence | $334 | $334 |
| 8938755 | Parkdale Quarry Fremont, CO | Mar 2016 | — | Yes | LowNegligence | $308 | $308 |
| 9821477 | Parsons Sand and Gravel Weld, CO | Oct 2024 | — | Yes | ModNegligence | $280 | $280 |
| 9820003 | Rich Pit Pueblo, CO | Mar 2024 | — | No | HighNegligence | $280 | $280 |
| 9397769 | Parkdale Quarry Fremont, CO | Dec 2019 | — | No | HighNegligence | $275 | $275 |
| 9348007 | Spec Agg Quarry Jefferson, CO | Mar 2018 | — | Yes | LowNegligence | $264 | $264 |
| 8939073 | FOUNTAIN PIT El Paso, CO | May 2016 | — | Yes | ModNegligence | $263 | $263 |
| 8831629 | Northern Portable Plant #12 Larimer, CO | May 2015 | — | Yes | ModNegligence | $263 | $263 |
| 8597177 | Northern Portable Plant #12 Larimer, CO | Dec 2013 | — | Yes | ModNegligence | $263 | $263 |
| 9304122 | Spec Agg Quarry Jefferson, CO | Mar 2017 | — | Yes | ModNegligence | $259 | $259 |
| 8837890 | Spec Agg Quarry Jefferson, CO | Sep 2016 | — | Yes | ModNegligence | $254 | $254 |
| 9827562 | Walstrum Quarry Clear Creek, CO | Jan 2025 | — | No | ModNegligence | $245 | $245 |
| 9827560 | Walstrum Quarry Clear Creek, CO | Jan 2025 | — | No | ModNegligence | $245 | $245 |
| 9347674 | Spec Agg Quarry Jefferson, CO | Nov 2018 | — | Yes | LowNegligence | $243 | $243 |
| 8761439 | Northern Portable Plant #17 Larimer, CO | Apr 2014 | — | Yes | ModNegligence | $243 | $243 |
| 9908518 | Riverbend Sand and Gravel Weld, CO | Aug 2024 | — | No | ModNegligence | $239 | $239 |
| 9902931 | Spec Agg Quarry Jefferson, CO | Mar 2024 | — | No | ModNegligence | $239 | $239 |
| 8939561 | Riverbend Sand and Gravel Weld, CO | Jun 2016 | — | No | HighNegligence | $235 | $235 |
| 9721670 | Riverbend Sand and Gravel Weld, CO | Mar 2023 | — | No | ModNegligence | $232 | $232 |
| 6459176 | Riverbend Sand and Gravel Weld, CO | Aug 2023 | — | No | ModNegligence | $232 | $232 |
| 9729509 | Spec Agg Quarry Jefferson, CO | Aug 2023 | — | No | ModNegligence | $232 | $232 |
| 9729508 | Spec Agg Quarry Jefferson, CO | Aug 2023 | — | No | ModNegligence | $232 | $232 |
| 6590506 | Spec Agg Quarry Jefferson, CO | Mar 2012 | — | Yes | ModNegligence | $224 | $224 |
| 9729569 | Walstrum Quarry Clear Creek, CO | Jan 2024 | — | No | HighNegligence | $221 | $221 |
| 8838436 | Red Canyon Quarry Fremont, CO | Jul 2016 | — | Yes | ModNegligence | $216 | $216 |
| 8939578 | Platte Sand and Gravel Weld, CO | Jul 2016 | — | Yes | ModNegligence | $216 | $216 |
| 6590172 | Riverbend Sand and Gravel Weld, CO | Jul 2022 | — | No | ModNegligence | $215 | $215 |
| 9656605 | Parkdale Quarry Fremont, CO | Jan 2022 | — | No | ModNegligence | $215 | $215 |
| 9729366 | Parkdale Quarry Fremont, CO | Jun 2023 | — | No | ModNegligence | $214 | $214 |
| 9729365 | Parkdale Quarry Fremont, CO | Jun 2023 | — | No | ModNegligence | $214 | $214 |
| 9728459 | Parkdale Quarry Fremont, CO | Mar 2023 | — | No | ModNegligence | $214 | $214 |
| 6947707 | Red Canyon Quarry Fremont, CO | Oct 2025 | — | No | ModNegligence | $209 | $209 |
Source: MSHA citation database. “Contractor” annotations indicate the cited party was on-site at the mine but not the mine’s operator -- responsibility attaches to the contractor LLC, not the mine’s owner. Section codes reference 30 CFR (the Mine Safety and Health regulations).
Labor relations (NLRB)
Company-level in CO — for MARTIN MARIETTA MATERIALS INC, not this location alone
National Labor Relations Board — unfair labor practice charges and union representation cases. The NLRB records cases at the company/regional level (no worksite address), so these are matched by company name and state and may span other MARTIN MARIETTA MATERIALS INC locations in the same state.
NLRB cases
National Labor Relations Board cases involving this employer. Includes unfair labor practice (ULP) filings and representation election proceedings. NLRB enforcement is process-driven; no per-case monetary penalty is assessed (remedies are case-by-case backpay orders, posting requirements, election re-runs, etc.). 3 cases · 3 representation
| Case number | Type | Filed | Closed | Status | Region |
|---|---|---|---|---|---|
| 27-RD-226235 | Representation election | Aug 2018 | Sep 2018 | Closed | Region 27, Denver, Colorado |
| 27-RC-134367 | Representation election | Aug 2014 | Sep 2014 | Closed | Region 27, Denver, Colorado |
| 27-RC-086595 | Representation election | Aug 2012 | Sep 2012 | Closed | Region 27, Denver, Colorado |
Source: NLRB case files. Rows shown are those the agency has published. Region numbers (1–31) correspond to NLRB's geographic offices.
Visa & labor certification (OFLC) — historical
No H-1B, H-2A, or H-2B labor condition applications on file (historical data only — DOL ended OFLC publication) for MARTIN MARIETTA MATERIALS, INC.. Verify directly with Office of Foreign Labor Certification →
Environmental compliance (EPA)
No EPA inspections or formal enforcement actions on file for MARTIN MARIETTA MATERIALS, INC.. Verify directly with Environmental Protection Agency →
Federal criminal prosecution record
No federal criminal prosecutions, plea agreements, or deferred-prosecution agreements on file for MARTIN MARIETTA MATERIALS, INC.. Verify directly with UVA Corporate Prosecution Registry →
Federal contracts
No federal contracts are recorded to this specific location.
Consolidated across all USAspending recipient entities under this corporate parent — not attributable to this single location.
Federal contract activity for the parent corporation. Source: USAspending.gov, net obligations. Recipient address is the SAM registration / HQ address, not necessarily the worksite.
Inspection history
| Date | Trigger | Violations | Serious | Penalty | |
|---|---|---|---|---|---|
| 2012-12-04 | Referral | 2 | 2 | $4,900 |
Source: OSHA IMIS. Citation amounts reflect initially assessed penalties; final amounts after appeal may differ.
In the news
Part of a larger organization
MARTIN MARIETTA MATERIALS, INC. is one of 26 establishments rolled up under the parent organization MARTIN MARIETTA MATERIALS INC.
Federal enforcement records on this page represent activity at this specific establishment only. The full enforcement footprint of MARTIN MARIETTA MATERIALS INC across all 26 of its tracked locations is viewable on the parent profile.
Other employers in this industry and state
Other employers in poured concrete foundation and structure contractors within CO, ordered by federal enforcement volume:
- PURGATOIRE VALLEY CONSTRUCTIONKIT CARSON — 2 federal enforcement records
- LANGSTON CONCRETE, INC.COLORADO SPRINGS — 2 federal enforcement records
- CONCRETE MANAGEMENT CORPORATIONLAKEWOOD — 2 federal enforcement records
- ALCON CONSTRUCTIONALAMOSA — 2 federal enforcement records
- Concrete Management CorpLakewood — 2 federal enforcement records
- CONCRETE EXPRESS INC.DENVER — 2 federal enforcement records
- CONCRETE MANAGEMENT CORPORATIONGRAND JUNCTION — 2 federal enforcement records
- MARTINEZ WESTERN CONSTRUCTORS LLCGREELEY — 2 federal enforcement records
- MARTINEZ WESTERN CONSTRUCTORS LLCTELLURIDE — 2 federal enforcement records
- LANGSTON CONCRETE, INC.SALIDA — 2 federal enforcement records
Other locations under this parent
Other establishments operated by MARTIN MARIETTA MATERIALS INC, ordered by federal enforcement volume:
- MARTIN MARIETTA MATERIALSCA — 3 federal enforcement records
- MARTIN MARIETTA MATERIALS, INCCOACHELLA, CA — 3 federal enforcement records
- MARTIN MARIETTA MATERIALS, INC.FORT CALHOUN, NE — 3 federal enforcement records
- MARTIN MARIETTA MATERIALS, INCDENVER, CO — 3 federal enforcement records
- MARTIN MARIETTA MATERIALS INCOROVILLE, CA — 3 federal enforcement records
- MARTIN MARIETTA MATERIALS INCTRUCKEE, CA — 3 federal enforcement records
- MARTIN MARIETTA MATERIALS, INCAURORA, CO — 3 federal enforcement records
- MARTIN MARIETTA MATERIALSSAN ANTONIO, TX — 2 federal enforcement records
- MARTIN MARIETTA MATERIALS, INC.CUMMING, GA — 2 federal enforcement records
- MARTIN MARIETTA MATERIALS, INC.GOLDEN, CO — 2 federal enforcement records
Related searches
- All MARTIN MARIETTA MATERIALS INC locationsParent rollup
- Poured Concrete Foundation and Structure ContractorsAll employers in this industry
- Employers in COState-wide enforcement data
- Poured Concrete Foundation in COIndustry × state cross-filter
About this data
This profile aggregates federal enforcement records on MARTIN MARIETTA MATERIALS, INC. from every major federal compliance and enforcement source plus the UVA Corporate Prosecution Registry. OSHA workplace safety inspections, WHD wage cases, MSHA mine safety, EPA environmental enforcement, NLRB labor relations, OFLC visa/labor certification, FMCSA motor carrier registration, SAM.gov debarments, CMS nursing-home records, BLS industry safety benchmarks, OSHA ITA self-reported injury rates, SEC enforcement and financial disclosures, CPSC and NHTSA recalls.
Establishments are matched across agencies using normalized employer name, state, and ZIP code. This establishment resolves to the parent rollup MARTIN MARIETTA MATERIALS INC, which operates 26 establishments in our dataset.
OSHA citations typically appear 3–8 months after the inspection, so very recent enforcement actions may not yet be reflected. Profiles may be incomplete if the establishment operates under multiple legal names or files under variations our entity-matching rules don’t yet cover. To report a missing record or correction, email corrections@fastdol.com.
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Contact sales →Frequently asked
- What is MARTIN MARIETTA MATERIALS, INC.'s OSHA violation history?
- MARTIN MARIETTA MATERIALS, INC. has 1 OSHA inspection on record with 2 violations and $4,900 in total penalties.
- How does MARTIN MARIETTA MATERIALS, INC.'s safety record compare to its industry?
- MARTIN MARIETTA MATERIALS, INC. operates in the poured concrete foundation and structure contractors industry. The industry average Total Recordable Incident Rate (TRIR) is 2.8. MARTIN MARIETTA MATERIALS, INC.'s self-reported DART rate is 0 compared to an industry average of 2.