Sailing ships, commercial, manufacturing · Michigan

Ontonagon Plant

Name: Ontonagon Plant Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Ontonagon, MI · ~31 workers · 3 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

C
Average Safety Record: 3.0
Avg TCR: 3.3
Industry avg: 0
Fatalities

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The verdict

Ontonagon Plant runs at 92% of its industry's injury rate - about level with the typical Sailing ships, commercial, manufacturing workplace, earning a grade C.

Ontonagon Plant: 3.0 TCR = 92% of Sailing ships, commercial, manufacturing BLS 3.3 · 3y Form 300A (see methodology below)

Ontonagon Plant safety composite

Ontonagon Plant scores strongest on total case rate (tcr) (safer than 64% of same-industry peers) and weakest on dart rate (safer than 21%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

46/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): C 3.03 per 100 workers

Safer than 64% of industry peers
DART rate: F 5.54 per 100 workers

Safer than 21% of industry peers
Fatalities: D 0

Safer than 52% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

Rising injury rate

Ontonagon Plant: 0.0 → 5.5 TCR

Peak year 2021 @ 5.5 TCR · DART/TCR 1.83× in 2021

Ontonagon Plant's TCR rose 5.5 from 0.0 in 2019 to 5.5 in 2021. In 2021, DART was 1.83× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 336611 · Ontonagon, MI AT/BELOW-IND · SMALL

Grade C · TCR 3.0 · 92% of ind

DART 5.5 DART
RANK #3/5
PHOTO Bollinger Mississipp…
BOOK 3y book
INJ 3 inj
SIZE ~31 FTE

Nearest TCR peer: Bollinger Mississippi Shipbuilding, LLC (0.0 TCR gap)

Read with this employer → · Industry book → · Michigan employers → · Look up another →

Jamestown Meta

3.1
This site

3
Bollinger Miss

3
Mississippi Ma

3
Trinity Marine

3

What this shows Ontonagon Plant averages 3.0 TCR (92% of the Sailing ships, commercial, manufacturing BLS benchmark).

Ontonagon Plant TCR series: 2019=0 · 2020=3.6 · 2021=5.5 · BLS 3.3

Where Ontonagon Plant falls in its industry

454 Sailing ships, commercial, man establishments

Safer than 64% of graded establishments in this industry, whose median TCR is 4.2.

Grade C

More dangerous than peersSafer than peers

Narrower to Michigan alone (the establishments it most directly competes with for workers and contracts): ranked #3 safest of 5 Sailing ships, commercial, man employers in Michigan.

Ontonagon Plant (31 employees, TCR 3.0) among 29 same-industry peers, split at the industry median of 100 employees and a TCR of 4.2

Ontonagon Plant has fewer employees than the Sailing ships, commercial, manufacturing median and a lower injury rate than the industry's median TCR of 4.2. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year	TCR	DART	Injuries
2021	5.5	5.5	2
2020	3.6	0.0	1
2019	0.0	0.0	0

OSHA ITA peer cross-reference

Establishment peer ledger

336611 · MI · Ontonagon

454 Sailing ships, commercial, manufacturing employers nationwide with a credible TCR · 16,393 rated employers in Michigan with headcount on file · 7 employers in Ontonagon, MI · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	Bollinger Mississippi Shipbuilding, LLC	PASCAGOULA, MS	3.0 TCR
NAICS-TCR	Mississippi Marine Corporation	GREENVILLE, MS	3.0 TCR
NAICS-TCR	Jamestown Metal Marine Sales, Inc	BOCA RATON, FL	3.1 TCR
NAICS-TCR	Trinity Marine Products, Inc. Plant 1075	CARUTHERSVILLE, MO	3.0 TCR
STATE-SIZE	Schwartz Greenhouse, Inc.	ROMULUS	31 FTE
STATE-SIZE	Electric Production	HOLLAND	31 FTE
STATE-SIZE	R.B. Satkowiak's City Sewer Cleaners	CARROLLTON	31 FTE
STATE-SIZE	Melching Inc.	MUSKEGON	31 FTE
CITY-NEAR	Aspirus Ontonagon Hospital	Ontonagon	85 FTE
CITY-NEAR	Lakeshore Systems, Inc. Ontonagon	Ontonagon	42 FTE
CITY-NEAR	Aspirus Ontonagon Hospital Long Term Care	Ontonagon	41 FTE
CITY-NEAR	Ontonagon County Telephone Company	Ontonagon	33 FTE
NAT-TCR	Brewery - Clipper City	Baltimore, MD	3.0 TCR
NAT-TCR	Interstate Diesel Service , Inc	Cleveland, OH	3.0 TCR
NAT-TCR	Leola Lumber Mill	Leola, AR	3.0 TCR
NAT-TCR	Sutter Medical Foundation (185-420)	Vacaville, CA	3.0 TCR
NAT-SIZE	Leisure Homestead at St. John	Saint John, KS	31 FTE
NAT-SIZE	Bloom at German Church	Indianapolis, IN	31 FTE
NAT-SIZE	Main Office - 01	Belgrade, MT	31 FTE
NAT-SIZE	Pressure Cast	Oakland, CA	31 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2021, 2020, 2019. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.