Aircraft carrier catapults manufacturing · Wisconsin

Isthmus Engineering & Manufacturing

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

Madison, WI · ~75 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

A
Excellent Safety Record: 1.3
Avg TCR: 3.3
Industry avg: 0
Fatalities

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The verdict

Isthmus Engineering & Manufacturing runs at 41% of its industry's injury rate - far safer than the typical Aircraft carrier catapults manufacturing workplace, earning a grade A.

Isthmus Engineering & Manufacturing: 1.3 TCR = 41% of Aircraft carrier catapults manufacturing BLS 3.3 · 2y Form 300A (see methodology below)

Isthmus Engineering & Manufacturing safety composite

Isthmus Engineering & Manufacturing scores strongest on dart rate (safer than 78% of same-industry peers) and weakest on fatalities (safer than 50%), 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).

69/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): C 1.34 per 100 workers

Safer than 73% of industry peers
DART rate: B 0 per 100 workers

Safer than 78% 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 & Manufacturing: 0.0 → 2.7 TCR

Peak year 2023 @ 2.7 TCR · DART/TCR 0× in 2023

Isthmus Engineering & Manufacturing's TCR rose 2.7 from 0.0 in 2022 to 2.7 in 2023. In 2023, DART was 0× 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 1.3 · 41% of ind

DART 0.0 DART
RANK #6/15
PHOTO Innovative Machining…
BOOK 2y book
INJ 2 inj
SIZE ~75 FTE

Nearest TCR peer: Innovative Machining Technology (0.0 TCR gap)

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

Esys

1.4
AutoMatrix

1.4
This site

1.3
Innovative Mac

1.3
Trucent Inc.

1.3

What this shows Isthmus Engineering & Manufacturing averages 1.3 TCR (41% of the Aircraft carrier catapults manufacturing BLS benchmark).

Isthmus Engineering & Manufacturing TCR series: 2022=0 · 2023=2.7 · BLS 3.3

Where Isthmus Engineering & Manufacturing falls in its industry

242 Aircraft carrier catapults man establishments

Safer than 73% 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 #6 safest of 15 Aircraft carrier catapults man employers in Wisconsin.

Isthmus Engineering & Manufacturing (75 employees, TCR 1.3) among 29 same-industry peers, split at the industry median of 81 employees and a TCR of 2.5

Isthmus Engineering & Manufacturing 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	Illnesses	Fatalities
2023	2.7	0.0	2	0	0
2022	0.0	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	Innovative Machining Technology	BOYERTOWN, PA	1.3 TCR
NAICS-TCR	Esys	AUBURN HILLS, MI	1.4 TCR
NAICS-TCR	Trucent Inc.	DEXTER, MI	1.3 TCR
NAICS-TCR	AutoMatrix	GRAND RAPIDS, MI	1.4 TCR
STATE-SIZE	Alma Plants	LA CROSSE	75 FTE
STATE-SIZE	Burlington Office	BURLINGTON	75 FTE
STATE-SIZE	The Wanasek Corporation	BURLINGTON	75 FTE
STATE-SIZE	Wenger Construction, Inc.	CAMPBELLSPORT	75 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	C & I Enclosures	Bessemer, AL	1.3 TCR
NAT-TCR	Roto Rooter	Wichita, KS	1.3 TCR
NAT-TCR	Grandville, Mi	Grandville, MI	1.3 TCR
NAT-TCR	Inteplast Group	Middlebury, IN	1.3 TCR
NAT-SIZE	Oyster Point Development Ph 2	South San Francisco, CA	75 FTE
NAT-SIZE	Aqua Contour Cutting, Inc.	Russellville, AR	75 FTE
NAT-SIZE	Silicon Valley Glass	Morgan Hill, CA	75 FTE
NAT-SIZE	Josloff Industries, LLC	Newark, NJ	75 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: 2023, 2022. 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.