Data / Mines / Knife River Corporation

Knife River Corporation: 84 open mines, 569 MSHA citations

Name: MSHA record of the mines of Knife River Corporation
Creator: SpecStream
License: https://creativecommons.org/licenses/by/4.0/

Knife River Corporation (MSHA controller ID 0176802) controls 84 open mines through 12 operators, with 488 employees in 11 states, mostly construction sand and gravel. Since January 1, 2022 MSHA issued 569 citations and orders at those mines with $275,699 in proposed penalties, and operators reported 69 injury or illness cases. Data from MSHA, November 6, 2026.

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MSHA controller ID: 0176802
Open mines: 84
Operators: 12
Employees: 488
States: 11
Citations and orders since January 1, 2022: 569
Significant and substantial: 87 (15.3%)
Closure orders: 10
High negligence or reckless: 29
Proposed penalties: $275,699
Amount paid so far: $207,361
Inspections: 656
Inspector hours on site: 3,985
Citations per inspection: 0.87 (all mines 2.30)
Accident reports: 73
Injury and illness cases: 69
Fatalities: 0
Latest MSHA record: November 4, 2026

Operators under Knife River Corporation

Operator	Open mines	Employees	Citations since 2022	Proposed penalties	Injury cases
Knife River Corporation Northwest	26	183	186	$133,798	27
Strata Corp	17	71	62	$20,703	3
Northstar Materials, Inc.	13	26	22	$3,268	3
JTL Group, Inc.	7	32	91	$33,766	5
Knife River Corporation Mountain West	5	17	37	$10,291	4
LTM Incorporated DBA Knife River Materials	4	14	19	$3,128	0
Knife River Corporation-South	3	28	67	$39,668	3
Hawaiian Cement	3	65	53	$17,886	8
Anchorage Sand & Gravel Company Inc	2	15	14	$2,140	7
West Hawaii Concrete Ltd	2	7	5	$747	0
Connolly-Pacific Company	1	19	10	$1,975	8
Knife River Construction	1	11	3	$8,329	1

Mines with the most citations

Mine	Operator	County	Main commodity	Employees	Citations since 2022
Star Pit #1	JTL Group, Inc.	Laramie County, WY	Construction sand and gravel	9	50
Honey Creek Quarry	Knife River Corporation-South	Burnet County, TX	Crushed, broken limestone	12	37
Farmington Pit	Knife River Corporation Northwest	Washington County, OR	Crushed, broken traprock	33	33
Halawa Valley	Hawaiian Cement	Honolulu County, HI	Crushed, broken stone	46	29
Skyhigh Pit	Knife River Corporation-South	Limestone County, TX	Crushed, broken limestone	11	23
Crusher #3	JTL Group, Inc.	Platte County, WY	Construction sand and gravel	14	19
Kirtland	Knife River Corporation Northwest	Jackson County, OR	Construction sand and gravel	17	18
Crusher #1	Knife River Corporation Mountain West	Ada County, ID	Construction sand and gravel	7	18
Waterview	Knife River Corporation Northwest	Columbia County, OR	Construction sand and gravel	16	17
Reed Pit	Knife River Corporation Northwest	Marion County, OR	Construction sand and gravel	17	16
Crusher #7	JTL Group, Inc.	Natrona County, WY	Construction sand and gravel	2	16
Puunene Quarry	Hawaiian Cement	Maui County, HI	Crushed, broken stone	14	13
Portable Plant #6	Strata Corp	Grand Forks County, ND	Construction sand and gravel	6	11
Waikapu Quarry	Hawaiian Cement	Maui County, HI	Crushed, broken stone	5	11
Pebbly Beach Quarry	Connolly-Pacific Company	Los Angeles County, CA	Crushed, broken stone	19	10
Detroit Lakes Plant	Strata Corp	Becker County, MN	Construction sand and gravel	12	10
Rogue Portable #8	Knife River Corporation Northwest	Deschutes County, OR	Crushed, broken stone	6	10
Murphy Creek	LTM Incorporated DBA Knife River Materials	Josephine County, OR	Crushed, broken stone	2	10
Ball Road Quarry	Knife River Corporation Northwest	Clackamas County, OR	Crushed, broken basalt	12	8
Klatt Terminal	Anchorage Sand & Gravel Company Inc	Anchorage, AK	Construction sand and gravel	12	8
Metro Portable #2	Knife River Corporation Northwest	Multnomah County, OR	Crushed, broken stone	5	8
Wash Plant 2	Knife River Corporation Mountain West	Ada County, ID	Construction sand and gravel	4	8
Willamette Portable #3	Knife River Corporation Northwest	Linn County, OR	Crushed, broken stone	4	8
Fisher Island Plant	Knife River Corporation Northwest	Benton County, OR	Crushed, broken traprock	15	7
Scarmardo	Knife River Corporation-South	Burleson County, TX	Construction sand and gravel	5	7
Metro Portable #1	Knife River Corporation Northwest	Columbia County, OR	Crushed, broken stone	4	7
Rogue Portable #2	Knife River Corporation Northwest	Klamath County, OR	Crushed, broken stone	4	7
Crusher #2	Knife River Corporation Mountain West	Bonneville County, ID	Construction sand and gravel	2	7
Central Oregon Portable #2	Knife River Corporation Northwest	Deschutes County, OR	Crushed, broken stone	2	7
Metro Portable #3	Knife River Corporation Northwest	Columbia County, OR	Crushed, broken stone	6	6
Willamette Portable #1	Knife River Corporation Northwest	Clatsop County, OR	Crushed, broken traprock	5	6
Rogue Portable #3	Knife River Corporation Northwest	Jackson County, OR	Crushed, broken stone	5	6
Palmer Loading Station	Anchorage Sand & Gravel Company Inc	Matanuska-Susitna, AK	Construction sand and gravel	3	6
Crusher #43521	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	2	6
Portable Plant #2	Strata Corp	Grand Forks County, ND	Construction sand and gravel	6	5
218 Plant	Strata Corp	Polk County, MN	Construction sand and gravel	4	5
Crusher #4	JTL Group, Inc.	Natrona County, WY	Construction sand and gravel	3	5
Stayton Rock Pit	Knife River Corporation Northwest	Linn County, OR	Construction sand and gravel	1	5
Elk River Wash Plant	LTM Incorporated DBA Knife River Materials	Curry County, OR	Construction sand and gravel	5	4
Portable Plant #3	Strata Corp	Grand Forks County, ND	Construction sand and gravel	4	4
Rollag Plant	Strata Corp	Clay County, MN	Construction sand and gravel	3	4
Star Plant	Strata Corp	Barnes County, ND	Construction sand and gravel	3	4
Portable-1	West Hawaii Concrete Ltd	Hawaii County, HI	Crushed, broken stone	3	4
Wash Plant	Knife River Corporation Mountain West	Bonneville County, ID	Construction sand and gravel	2	4
Portable Plant # 9	Strata Corp	Richland County, MT	Construction sand and gravel	2	4
Knife River Construction Vernalis Plant	Knife River Construction	San Joaquin County, CA	Construction sand and gravel	11	3
Rogue Portable #4	Knife River Corporation Northwest	Jackson County, OR	Crushed, broken traprock	5	3
Verdendrye Plant	Strata Corp	Grand Forks County, ND	Construction sand and gravel	4	3
Keizer Pit & Plant	Knife River Corporation Northwest	Marion County, OR	Construction sand and gravel	4	3
Mobile Crusher #1	LTM Incorporated DBA Knife River Materials	Douglas County, OR	Crushed, broken stone	4	3
Rogue Portable #12	Knife River Corporation Northwest	Douglas County, OR	Crushed, broken stone	3	3
Crusher #43534	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	2	3
Portable Plant #10	Strata Corp	Clay County, MN	Construction sand and gravel	2	3
Crusher #43316	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	2	3
Warroad Plant	Strata Corp	Lake Of The Woods County, MN	Crushed, broken stone	5	2
Jefferson Wash Plant	Knife River Corporation Northwest	Linn County, OR	Crushed, broken stone	4	2
Portable Crushing Plant #1	Strata Corp	Polk County, MN	Construction sand and gravel	3	2
Screen #44535	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	3	2
Mobile Crusher #4	LTM Incorporated DBA Knife River Materials	Coos County, OR	Construction sand and gravel	3	2
Rogue Portable #6	Knife River Corporation Northwest	Klamath County, OR	Crushed, broken stone	3	2
Forester Pit	Strata Corp	Kittson County, MN	Construction sand and gravel	2	2
Rogue Portable #7	Knife River Corporation Northwest	Benton County, OR	Crushed, broken stone	2	2
Wash Plant 45475	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	1	2
Wash Screw #45708	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	1	2
Portable Plant #5	Strata Corp	Grand Forks County, ND	Construction sand and gravel	1	2
Northern Sand & Gravel	Strata Corp	Polk County, MN	Construction sand and gravel	8	1
Kona Sand Plant	West Hawaii Concrete Ltd	Hawaii County, HI	Construction sand and gravel	4	1
Crusher #43517	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	3	1
Metro Portable #4	Knife River Corporation Northwest	Columbia County, WA	Construction sand and gravel	3	1
Crusher #43523	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	2	1
Screen Plant 44540	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	2	1
Casper Pit	JTL Group, Inc.	Natrona County, WY	Construction sand and gravel	2	1
Wash Screw #45719	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	1	1
Eugene Plant	Knife River Corporation Northwest	Lane County, OR	Construction sand and gravel	1	1
Portable Plant #7	Strata Corp	Grand Forks County, ND	Construction sand and gravel	4	0
Crusher #43516	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	3	0
Rogue Portable #11	Knife River Corporation Northwest	Jackson County, OR	Construction sand and gravel	3	0
Rogue Portable #10	Knife River Corporation Northwest	Marion County, OR	Crushed, broken stone	3	0
Wash Plant 3	Knife River Corporation Mountain West	Ada County, ID	Construction sand and gravel	2	0
Crusher #43527	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	2	0
Crusher #43519	Northstar Materials, Inc.	Beltrami County, MN	Construction sand and gravel	2	0
Portable Plant #8	Strata Corp	Eddy County, ND	Construction sand and gravel	2	0
Crusher #6	JTL Group, Inc.	Natrona County, WY	Crushed, broken limestone	2	0
Crusher #2	JTL Group, Inc.	Natrona County, WY	Crushed, broken stone	0	0

States

State	Open mines
Oregon	29
Minnesota	21
North Dakota	8
Wyoming	7
Idaho	5
Hawaii	5
Texas	3
California	2
Alaska	2
Montana	1
Washington	1

Commodities

Main commodity	Open mines
Construction sand and gravel	54
Crushed, broken stone	22
Crushed, broken traprock	4
Crushed, broken limestone	3
Crushed, broken basalt	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	121	23	$39,763	15
2023	115	12	$118,260	15
2024	130	17	$41,866	13
2025	102	15	$29,601	10
2026	101	20	$46,209	16

Standards cited most at mines controlled by Knife River Corporation

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 56.12004	Surface metal and nonmetal mines	88
30 CFR 56.14100	Surface metal and nonmetal mines	45
30 CFR 56.14107	Surface metal and nonmetal mines	35
30 CFR 50.30	Reporting of accidents, injuries and illnesses	25
30 CFR 56.14112	Surface metal and nonmetal mines	22
30 CFR 56.12008	Surface metal and nonmetal mines	21
30 CFR 56.20003	Surface metal and nonmetal mines	20
30 CFR 56.12032	Surface metal and nonmetal mines	17
30 CFR 56.4201	Surface metal and nonmetal mines	17
30 CFR 56.11001	Surface metal and nonmetal mines	16
30 CFR 56.18002	Surface metal and nonmetal mines	13
30 CFR 56.14132	Surface metal and nonmetal mines	12
30 CFR 56.9300	Surface metal and nonmetal mines	11
30 CFR 56.12028	Surface metal and nonmetal mines	11
30 CFR 56.12030	Surface metal and nonmetal mines	10

Injury and illness cases at mines controlled by Knife River Corporation

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

Degree	Cases
Permanent disability	2
Days away from work or restricted activity	44
No lost time, or an occupational illness	23

What the accident reports at mines controlled by Knife River Corporation describe

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

Classification	Reports
Handling of materials	30
Machinery	11
Slip or fall of person	8
Handtools (nonpowered)	6
Powered haulage	6
Other	5
Stepping or kneeling on object	2
Fire	2
Poisoning (toxic materials)	1
Entrapment	1

Equipment named in accident reports at mines controlled by Knife River Corporation

Equipment	Reports
Hand tools (not powered)	7
Conveyor	5
Hand tools (powered)	4
Crusher	4
Front-end loader	3
Welding machine	3
Trucks	3
Crane	2
Ore haulage trucks - off highway trucks	2
Dredge	2

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