Aircraft carrier catapults manufacturing · Wisconsin

Isthmus Engineering and Manufacturing Coop

Name: Isthmus Engineering and Manufacturing Coop Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Madison, WI · ~69 workers · 4 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

A
Excellent Safety Record: 0.7
Avg TCR: 3.3
Industry avg: 0
Fatalities

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The verdict

Isthmus Engineering and Manufacturing Coop runs at 22% of its industry's injury rate - far safer than the typical Aircraft carrier catapults manufacturing workplace, earning a grade A.

Isthmus Engineering and Manufacturing Coop: 0.7 TCR = 22% of Aircraft carrier catapults manufacturing BLS 3.3 · 4y Form 300A (see methodology below)

Isthmus Engineering and Manufacturing Coop safety composite

Isthmus Engineering and Manufacturing Coop scores strongest on total case rate (tcr) (safer than 89% of same-industry peers) and weakest on dart rate (safer than 36%), 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).

61/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): B 0.71 per 100 workers

Safer than 89% of industry peers
DART rate: D 1.41 per 100 workers

Safer than 36% of industry peers
Fatalities: D 0

Safer than 50% 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

Isthmus Engineering and Manufacturing Coop: 0.0 → 2.8 TCR

Peak year 2021 @ 2.8 TCR · DART/TCR 1.99× in 2021

Isthmus Engineering and Manufacturing Coop's TCR rose 2.8 from 0.0 in 2017 to 2.8 in 2021. In 2021, DART was 1.99× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 333999 · Madison, WI AT/BELOW-IND · SMALL

Grade A · TCR 0.7 · 22% of ind

DART 1.4 DART
RANK #2/15
PHOTO Drucker Diagnostics
BOOK 4y book
INJ 2 inj
SIZE ~69 FTE

Nearest TCR peer: Drucker Diagnostics (0.0 TCR gap)

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

Beckman Coulte

0.8
JCI Marinette

0.8
This site

0.7
Drucker Diagno

0.7
HAUMILLER ENGI

0.7

What this shows Isthmus Engineering and Manufacturing Coop averages 0.7 TCR (22% of the Aircraft carrier catapults manufacturing BLS benchmark).

Isthmus Engineering and Manufacturing Coop TCR series: 2017=0 · 2019=0 · 2020=0 · 2021=2.8 · BLS 3.3

Where Isthmus Engineering and Manufacturing Coop falls in its industry

242 Aircraft carrier catapults man establishments

Safer than 89% of graded establishments in this industry, whose median TCR is 2.5.

Grade A

More dangerous than peersSafer than peers

Narrower to Wisconsin alone (the establishments it most directly competes with for workers and contracts): ranked #2 safest of 15 Aircraft carrier catapults man employers in Wisconsin.

Isthmus Engineering and Manufacturing Coop (69 employees, TCR 0.7) among 29 same-industry peers, split at the industry median of 81 employees and a TCR of 2.5

Isthmus Engineering and Manufacturing Coop has fewer employees than the Aircraft carrier catapults manufacturing median and a lower injury rate than the industry's median TCR of 2.5. 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	2.8	1.4	2
2020	0.0	0.0	0
2019	0.0	0.0	0
2017	0.0	0.0	0

OSHA ITA peer cross-reference

Establishment peer ledger

333999 · WI · Madison

242 Aircraft carrier catapults manufacturing employers nationwide with a credible TCR · 12,834 rated employers in Wisconsin with headcount on file · 577 employers in Madison, WI · 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	Drucker Diagnostics	PHILIPSBURG, PA	0.7 TCR
NAICS-TCR	HAUMILLER ENGINEERING COMPANY	ELGIN, IL	0.7 TCR
NAICS-TCR	Beckman Coulter - Indianapolis	INDIANAPOLIS, IN	0.8 TCR
NAICS-TCR	JCI Marinette - Menominee	MARINETTE, WI	0.8 TCR
STATE-SIZE	Pewaukee Central Stores	PEWAUKEE	69 FTE
STATE-SIZE	Metro North	MILWAUKEE	69 FTE
STATE-SIZE	Jack Walters & Sons Corp. - Allenton	ALLENTON	69 FTE
STATE-SIZE	Equix Energy, Inc. - TX	FOND DU LAC	69 FTE
CITY-NEAR	St. Mary's Hospital - Madison	Madison	2,401 FTE
CITY-NEAR	Meriter Hospital	Madison	2,249 FTE
CITY-NEAR	EatStreet	Madison	1,659 FTE
CITY-NEAR	TDS - Junction Road (All Employees)	Madison	1,302 FTE
NAT-TCR	CCI Industrial Services, LLC	Anchorage, AK	0.7 TCR
NAT-TCR	Scr Lax	Los Angeles, CA	0.7 TCR
NAT-TCR	DeWind One-Pass Trenching LLC	Zeeland, MI	0.7 TCR
NAT-TCR	CHS Services - 320 SSR	Melville, NY	0.7 TCR
NAT-SIZE	Red Rock Oil Field Services	Colorado City, TX	69 FTE
NAT-SIZE	Dairy Farm	Lowville, NY	69 FTE
NAT-SIZE	United Minerals & Properties DBA Cimbar Performance Minerals	Chatsworth, GA	69 FTE
NAT-SIZE	Webster Nursing and Rehabilitation Center	Charleston, WV	69 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, 2017. 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.