Data / Mines / Martin Marietta Materials Inc

Martin Marietta Materials Inc: 329 open mines

Name: MSHA record of the mines of Martin Marietta Materials Inc
Creator: SpecStream
License: https://creativecommons.org/licenses/by/4.0/

Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.

Martin Marietta Materials Inc (MSHA controller ID M00174) controls 329 open mines through 15 operators, with 6,043 employees in 30 states, mostly crushed, broken limestone. Since January 1, 2022 MSHA issued 4,980 citations and orders at those mines with $2,290,995 in proposed penalties, and operators reported 539 injury or illness cases, 5 of them fatal. Data from MSHA, November 6, 2026.

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MSHA controller ID: M00174
Open mines: 329
Operators: 15
Employees: 6,043
States: 30
Citations and orders since January 1, 2022: 4,980
Significant and substantial: 680 (13.7%)
Closure orders: 74
High negligence or reckless: 195
Proposed penalties: $2,290,995
Amount paid so far: $1,901,198
Inspections: 4,346
Inspector hours on site: 56,402
Citations per inspection: 1.15 (all mines 2.30)
Accident reports: 581
Injury and illness cases: 539
Fatalities: 5
Latest MSHA record: November 5, 2026

Operators under Martin Marietta Materials Inc

Operator	Open mines	Employees	Citations since 2022	Proposed penalties	Injury cases
Martin Marietta Materials, Inc.	229	4,453	3,927	$1,924,475	410
Martin Marietta Materials Southwest, LLC	24	584	372	$135,514	44
Bluegrass Materials Company, LLC	20	299	142	$22,917	20
Martin Marietta Southeast Agg Operations, LLC	16	188	86	$23,492	24
Barton Sand & Gravel	10	50	10	$1,998	5
Martin Marietta Northern California Aggregates,LLC	8	72	98	$30,983	6
Meridian Aggregates Company LP	5	69	41	$7,318	4
Hunt Martin Materials L.L.C.	3	119	135	$82,056	10
Hanson Aggregates LLC	3	77	43	$14,997	9
Martin Marietta Altn Aggregates, Inc.	3	38	25	$4,626	4
Martin Marietta Arizona, LLC	3	28	7	$1,458	1
Martin Marietta San Diego Aggregates, LLC	2	32	42	$12,771	0
Mission Valley Rock, LLC	1	19	47	$27,616	1
Palmetto Sand Company Inc	1	14	3	$484	1
Carolina Quarries Inc	1	1	2	$290	0

Mines with the most citations

Mine	Operator	County	Main commodity	Employees	Citations since 2022
Martin Marietta, Woodville Lime & Stone	Martin Marietta Materials, Inc.	Sandusky County, OH	Lime	116	145
Martin Marietta, Gabbs Mine	Martin Marietta Materials, Inc.	Nye County, NV	Industrial inorg. chemicals	115	144
North Indianapolis Quarry & Mill	Martin Marietta Materials, Inc.	Hamilton County, IN	Crushed, broken limestone	42	138
Apex Quarry and Plant	Martin Marietta Materials, Inc.	Clark County, NV	Lime	115	103
Weeping Water Mine	Martin Marietta Materials, Inc.	Cass County, NE	Crushed, broken limestone	95	100
Natividad Plant	Martin Marietta Materials, Inc.	Monterey County, CA	Crushed, broken limestone	72	95
Randolph Deep Mine	Hunt Martin Materials L.L.C.	Clay County, MO	Crushed, broken limestone	103	93
Fort Calhoun Underground Mine	Martin Marietta Materials, Inc.	Washington County, NE	Crushed, broken limestone	102	92
Kentucky Avenue Mine	Martin Marietta Materials, Inc.	Marion County, IN	Crushed, broken limestone	40	92
Noblesville Stone	Martin Marietta Materials, Inc.	Hamilton County, IN	Crushed, broken limestone	35	87
New Braunfels Plant	Martin Marietta Materials, Inc.	Comal County, TX	Lime	83	83
New Melle Mine	Martin Marietta Materials, Inc.	St Charles County, MO	Crushed, broken limestone	37	75
Marble Falls Plant	Martin Marietta Materials, Inc.	Burnet County, TX	Lime	15	70
Nelson Quarry & Plant	Martin Marietta Materials, Inc.	Coconino County, AZ	Lime	84	67
Anderson Mine and Mill	Martin Marietta Materials, Inc.	Franklin County, TN	Crushed, broken limestone	34	64
Clifton Plant	Martin Marietta Materials, Inc.	Bosque County, TX	Lime	70	63
Montevallo Quarry & Mill	Martin Marietta Materials, Inc.	Shelby County, AL	Lime	84	62
O'Neal Quarry & Mill	Martin Marietta Materials, Inc.	Shelby County, AL	Lime	108	58
Fort Myers Quarry	Martin Marietta Materials, Inc.	Lee County, FL	Crushed, broken limestone	85	58
Bluff City Mine	Martin Marietta Materials, Inc.	Madison County, IL	Crushed, broken limestone	51	57
North Indianapolis Underground Quarry	Martin Marietta Materials, Inc.	Hamilton County, IN	Crushed, broken limestone	1	56
Crab Orchard Mine and Mill	Martin Marietta Materials, Inc.	Cumberland County, TN	Crushed, broken limestone	57	53
Lowell Mine & Mill	Martin Marietta Materials, Inc.	Marion County, FL	Crushed, broken limestone	32	48
Crawford Mine & Mill	Martin Marietta Materials, Inc.	Mclennan County, TX	Crushed, broken limestone	43	47
Sunol Aggregates	Mission Valley Rock, LLC	Alameda County, CA	Construction sand and gravel	19	47
Walstrum Quarry	Martin Marietta Materials, Inc.	Clear Creek County, CO	Crushed, broken granite	35	46
Fort Dodge Mine	Martin Marietta Materials, Inc.	Webster County, IA	Crushed, broken limestone	48	44
Barnhart Quarry	Martin Marietta Materials, Inc.	Jefferson County, MO	Crushed, broken limestone	32	43
Martin Marietta Materials, Inc.	Martin Marietta Materials, Inc.	Ste Genevieve County, MO	Lime	62	41
Troy West Quarry	Martin Marietta Materials, Inc.	Lincoln County, MO	Crushed, broken limestone	5	41
Ames Mine	Martin Marietta Materials, Inc.	Story County, IA	Crushed, broken limestone	57	39
Nolanville Mine & Mill	Martin Marietta Materials, Inc.	Bell County, TX	Crushed, broken limestone	23	39
Buildex	Martin Marietta Materials, Inc.	Platte County, MO	Common shale	26	38
Tory East Quarry	Martin Marietta Materials, Inc.	Lincoln County, MO	Crushed, broken limestone	8	38
Martin Marietta Slaton Plant	Martin Marietta Materials Southwest, LLC	Crosby County, TX	Construction sand and gravel	30	37
Kokomo Quarry	Martin Marietta Materials, Inc.	Howard County, IN	Crushed, broken limestone	6	37
Granite Canyon Quarry	Martin Marietta Materials, Inc.	Laramie County, WY	Crushed, broken granite	42	34
Amargosa Quarry and Plant	Martin Marietta Materials, Inc.	Nye County, NV	Clay, ceramic, refractory mnls.	47	33
Arrowood	Martin Marietta Materials, Inc.	Mecklenburg County, NC	Crushed, broken granite	27	33
Martin Marietta Merkel Plant	Martin Marietta Materials Southwest, LLC	Jones County, TX	Construction sand and gravel	20	33
Cayce Quarry	Martin Marietta Materials, Inc.	Lexington County, SC	Crushed, broken granite	27	32
Beckmann Quarry	Martin Marietta Materials Southwest, LLC	Bexar County, TX	Crushed, broken limestone	48	31
Sully Mine	Martin Marietta Materials, Inc.	Jasper County, IA	Crushed, broken limestone	20	31
Mill Creek Limestone Quarry	Martin Marietta Materials Southwest, LLC	Johnston County, OK	Crushed, broken limestone	60	30
Maitri Sand and Gravel	Hanson Aggregates LLC	Riverside County, CA	Construction sand and gravel	15	30
Sanger Aggregate Plant	Martin Marietta Northern California Aggregates,LLC	Fresno County, CA	Sand, industrial	10	30
Plant #65	Martin Marietta Materials, Inc.	Andrew County, MO	Crushed, broken limestone	25	28
Lotawana Quarry	Martin Marietta Materials, Inc.	Jackson County, MO	Crushed, broken limestone	18	28
Matthews Quarry	Martin Marietta Materials, Inc.	Mecklenburg County, NC	Crushed, broken granite	15	27
North Bridgeport Quarry	Martin Marietta Materials Southwest, LLC	Wise County, TX	Crushed, broken limestone	60	26
Iron Mountain Quarry	Martin Marietta Materials, Inc.	St Francois County, MO	Crushed, broken traprock	31	26
Olathe Quarry	Martin Marietta Materials, Inc.	Johnson County, KS	Crushed, broken limestone	12	26
Durham Mine & Mill	Martin Marietta Materials, Inc.	Marion County, IA	Crushed, broken limestone	33	25
Eudora Quarry	Martin Marietta Materials, Inc.	Douglas County, KS	Crushed, broken limestone	9	25
Milford Quarry	Martin Marietta Materials, Inc.	Beaver County, UT	Crushed, broken stone	9	25
North Huntsville Quarry & Mill	Martin Marietta Southeast Agg Operations, LLC	Madison County, AL	Crushed, broken limestone	17	23
Plant #81	Martin Marietta Materials, Inc.	Nodaway County, MO	Crushed, broken limestone	12	23
Red Canyon Quarry	Martin Marietta Materials, Inc.	Fremont County, CO	Crushed, broken stone	10	23
Stamper Underground	Hunt Martin Materials L.L.C.	Platte County, MO	Crushed, broken limestone	1	23
Gleason Mills & Mines	Martin Marietta Materials, Inc.	Weakley County, TN	Common clays	18	22
Kings Mountain Plant	Martin Marietta Materials, Inc.	Cleveland County, NC	Crushed, broken limestone	13	22
Champ Quarry	Martin Marietta Materials, Inc.	St Louis County, MO	Crushed, broken limestone	50	21
Texas Quarry	Bluegrass Materials Company, LLC	Baltimore County, MD	Crushed, broken limestone	38	21
Riverbend Sand and Gravel	Martin Marietta Materials, Inc.	Weld County, CO	Construction sand and gravel	23	21
Lakeside, Vigilante Aggregates	Martin Marietta San Diego Aggregates, LLC	San Diego County, CA	Construction sand and gravel	22	21
Black Rock Quarry & Plant	Meridian Aggregates Company LP	Lawrence County, AR	Crushed, broken limestone	13	21
Santee Aggregates	Martin Marietta San Diego Aggregates, LLC	San Diego County, CA	Crushed, broken stone	10	21
Snyder	Martin Marietta Materials, Inc.	Kiowa County, OK	Crushed, broken granite	30	20
Edgefield Quarry	Bluegrass Materials Company, LLC	Edgefield County, SC	Crushed, broken granite	10	20
Ottawa Quarry	Martin Marietta Materials, Inc.	Franklin County, KS	Crushed, broken limestone	6	20
Garwood Plant	Martin Marietta Materials Southwest, LLC	Colorado County, TX	Construction sand and gravel	24	19
Sunflower Quarry	Hunt Martin Materials L.L.C.	Johnson County, KS	Crushed, broken limestone	15	19
Davis Quarry	Martin Marietta Materials, Inc.	Murray County, OK	Crushed, broken limestone	28	18
Webberville S&G	Martin Marietta Materials Southwest, LLC	Travis County, TX	Construction sand and gravel	26	18
Columbia West Quarry	Martin Marietta Materials, Inc.	Boone County, MO	Crushed, broken limestone	20	18
North Columbia Quarry	Martin Marietta Materials, Inc.	Richland County, SC	Crushed, broken granite	18	18
Guernsey Quarry	Martin Marietta Materials, Inc.	Platte County, WY	Crushed, broken limestone	10	18
Clarkdale Plant #24	Martin Marietta Materials, Inc.	Yavapai County, AZ	Construction sand and gravel	9	18
Woodbine Quarry	Martin Marietta Materials, Inc.	Dickinson County, KS	Crushed, broken limestone	9	18
Auxvasse South Quarry	Martin Marietta Materials, Inc.	Callaway County, MO	Crushed, broken limestone	9	18
Gilliam Quarry	Martin Marietta Materials, Inc.	Saline County, MO	Crushed, broken limestone	1	18
Bridgeport Stone Plant	Martin Marietta Materials Southwest, LLC	Wise County, TX	Crushed, broken limestone	94	17
Medina Rock & Rail	Martin Marietta Materials Southwest, LLC	Medina County, TX	Crushed, broken limestone	48	17
Junction City Quarry	Martin Marietta Materials, Inc.	Talbot County, GA	Crushed, broken granite	27	17
Tin Top Sand and Gravel Plant	Martin Marietta Materials Southwest, LLC	Parker County, TX	Construction sand and gravel	24	17
Bells/Savoy Aggregate Operations	Martin Marietta Materials Southwest, LLC	Fannin County, TX	Construction sand and gravel	23	17
Marshall Quarry	Martin Marietta Materials, Inc.	Saline County, MO	Crushed, broken limestone	15	17
Santa Margarita Aggregates	Martin Marietta Northern California Aggregates,LLC	San Luis Obispo County, CA	Construction sand and gravel	13	17
Malcom Mine	Martin Marietta Materials, Inc.	Poweshiek County, IA	Crushed, broken limestone	11	17
Pacific Quarry	Martin Marietta Materials, Inc.	Skagit County, WA	Crushed, broken stone	5	17
Ruby Quarry	Martin Marietta Materials, Inc.	Jones County, GA	Crushed, broken granite	42	16
Spec Agg Quarry	Martin Marietta Materials, Inc.	Jefferson County, CO	Crushed, broken sandstone	32	16
Berkeley Quarry	Martin Marietta Materials, Inc.	Berkeley County, SC	Crushed, broken limestone	23	16
Rio Medina	Martin Marietta Materials Southwest, LLC	Medina County, TX	Crushed, broken limestone	21	16
Lebanon Quarry & Mill	Martin Marietta Altn Aggregates, Inc.	Wilson County, TN	Crushed, broken limestone	15	16
Rock Hill Quarry	Martin Marietta Materials, Inc.	York County, SC	Crushed, broken granite	14	16
Garfield Sand & Gravel	Martin Marietta Materials Southwest, LLC	Travis County, TX	Construction sand and gravel	12	16
Cloverdale Quarry	Martin Marietta Materials, Inc.	Putnam County, IN	Crushed, broken limestone	11	16
Denver Quarry	Martin Marietta Materials, Inc.	Lincoln County, NC	Crushed, broken granite	10	16
Alden Quarry and Shop	Martin Marietta Materials, Inc.	Hardin County, IA	Crushed, broken limestone	29	15

States

State	Open mines
North Carolina	39
Missouri	35
Texas	27
Iowa	23
Tennessee	21
Georgia	19
Minnesota	16
California	15
Kansas	15
Indiana	13
Virginia	12
Ohio	11
South Carolina	11
Alabama	10
Oklahoma	10
Colorado	8
Maryland	8
Arizona	6
Kentucky	6
Nebraska	5
Florida	4
Arkansas	3
Wyoming	3
Nevada	3
Illinois	1
Louisiana	1
Pennsylvania	1
Utah	1
Washington	1
West Virginia	1

Commodities

Main commodity	Open mines
Crushed, broken limestone	150
Construction sand and gravel	75
Crushed, broken granite	54
Crushed, broken stone	21
Lime	10
Crushed, broken sandstone	3
Sand, common	3
Sand, industrial	2
Crushed, broken quartzite	2
Common clays	2
Dimension stone	1
Crushed, broken traprock	1
Common shale	1
Industrial inorg. chemicals	1
Clay, ceramic, refractory mnls.	1

Citations and injury cases by year

Calendar years since 2022; 2026 runs to the date of the MSHA files.

Year	Citations and orders	Significant and substantial	Proposed penalties	Injury and illness cases
2022	1,123	187	$403,703	121
2023	1,053	151	$505,829	117
2024	1,209	176	$891,332	121
2025	847	85	$307,480	95
2026	748	81	$182,651	85

Standards cited most at mines controlled by Martin Marietta Materials Inc

Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.

Standard	What the part covers	Citations
30 CFR 56.20003	Surface metal and nonmetal mines	369
30 CFR 56.14100	Surface metal and nonmetal mines	338
30 CFR 56.12004	Surface metal and nonmetal mines	320
30 CFR 56.14107	Surface metal and nonmetal mines	281
30 CFR 56.14112	Surface metal and nonmetal mines	219
30 CFR 56.12032	Surface metal and nonmetal mines	162
30 CFR 56.11001	Surface metal and nonmetal mines	116
30 CFR 56.14132	Surface metal and nonmetal mines	109
30 CFR 56.12028	Surface metal and nonmetal mines	107
30 CFR 57.3200	Underground metal and nonmetal mines	102
30 CFR 56.4201	Surface metal and nonmetal mines	95
30 CFR 56.12008	Surface metal and nonmetal mines	86
30 CFR 56.14207	Surface metal and nonmetal mines	81
30 CFR 56.12018	Surface metal and nonmetal mines	79
30 CFR 47.41	Hazard communication	78

Injury and illness cases at mines controlled by Martin Marietta Materials Inc

Accident reports by degree of injury, as the operator reported them to MSHA.

Degree	Cases
Fatality	5
Permanent disability	10
Days away from work or restricted activity	338
No lost time, or an occupational illness	186

What the accident reports at mines controlled by Martin Marietta Materials Inc describe

Accident classification, as MSHA codes the circumstances that contributed most directly.

Classification	Reports
Handling of materials	185
Slip or fall of person	114
Handtools (nonpowered)	64
Machinery	57
Powered haulage	54
Other	29
Fire	20
Stepping or kneeling on object	10
Disorders (repeated trauma)	9
Fall of roof or back	7

Equipment named in accident reports at mines controlled by Martin Marietta Materials Inc

Equipment	Reports
Hand tools (not powered)	66
Front-end loader	38
Hand tools (powered)	30
Ore haulage trucks - off highway trucks	21
Trucks	17
Shovel	15
Conveyor	13
Forklift	9
Man lift	9
Carriage-mounted drills	8

US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.