Machine shops · Wisconsin

Aztalan Engineering, Inc.

Name: Aztalan Engineering, Inc. Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Lake Mills, WI · ~67 workers · 8 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

D
Poor Safety Record: 4.2
Avg TCR: 3.3
Industry avg: 0
Fatalities

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The verdict

Aztalan Engineering, Inc. runs at 127% of its industry's injury rate - more dangerous than the typical Machine shops workplace, earning a grade D.

Aztalan Engineering, Inc.: 4.2 TCR = 127% of Machine shops BLS 3.3 · 8y Form 300A (see methodology below)

Aztalan Engineering, Inc. safety composite

Aztalan Engineering, Inc. scores strongest on dart rate (safer than 75% of same-industry peers) and weakest on total case rate (tcr) (safer than 41%), 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).

55/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): D 4.2 per 100 workers

Safer than 41% of industry peers
DART rate: B 0 per 100 workers

Safer than 75% 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%).

TCR Δ

−6.5

2017→2024

Aztalan Engineering, Inc. injury rate improved

Aztalan Engineering, Inc.'s TCR fell 6.5 from 6.5 in 2017 to 0.0 in 2024. Peak filing year was 2018 at 10.9 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2017=6.5 · 2018=10.9 · 2019=3.0 · 2020=7.6 · 2021=2.3 · 2022=3.3 · 2023=0.0 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 332710 · Lake Mills, WI ABOVE-IND · SMALL

Grade D · TCR 4.2 · 127% of ind

DART 0.0 DART
RANK #69/146
PHOTO Systems 3 Inc
BOOK 8y book
INJ 21 inj
SIZE ~67 FTE

Nearest TCR peer: Systems 3 Inc (0.0 TCR gap)

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

This site

4.2
Systems 3 Inc

4.2
IL180

4.2
Willer Tool Co

4.2
Gray Machine

4.2

What this shows Aztalan Engineering, Inc. averages 4.2 TCR (127% of the Machine shops BLS benchmark).

Aztalan Engineering, Inc. TCR series: 2017=6.5 · 2018=10.9 · 2019=3 · 2020=7.6 · 2021=2.3 · 2022=3.3 · 2023=0 · 2024=0 · BLS 3.3

Where Aztalan Engineering, Inc. falls in its industry

1,821 Machine shops establishments

Safer than 41% of graded establishments in this industry, whose median TCR is 3.5.

Grade D

More dangerous than peersSafer than peers

Narrower to Wisconsin alone (the establishments it most directly competes with for workers and contracts): ranked #69 safest of 146 Machine shops employers in Wisconsin.

Aztalan Engineering, Inc. (67 employees, TCR 4.2) among 29 same-industry peers, split at the industry median of 48 employees and a TCR of 3.5

Aztalan Engineering, Inc. has more employees than the Machine shops median and a higher injury rate than the industry's median TCR of 3.5. 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
2024	0.0	0.0	0
2023	0.0	0.0	0
2022	3.3	3.3	2
2021	2.3	0.0	1
2020	7.6	3.0	5
2019	3.0	0.0	2
2018	10.9	4.7	7
2017	6.5	0.0	4

OSHA ITA peer cross-reference

Establishment peer ledger

332710 · WI · Lake Mills

1,821 Machine shops employers nationwide with a credible TCR · 12,834 rated employers in Wisconsin with headcount on file · 20 employers in Lake Mills, 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	Systems 3 Inc	TEMPE, AZ	4.2 TCR
NAICS-TCR	IL180	LOVES PARK, IL	4.2 TCR
NAICS-TCR	Willer Tool Corporation	JACKSON, WI	4.2 TCR
NAICS-TCR	Gray Machine	ROCK ISLAND, IL	4.2 TCR
STATE-SIZE	Hallmark Drywall, Inc	MADISON	67 FTE
STATE-SIZE	Brickl Bros., Inc.	WEST SALEM	67 FTE
STATE-SIZE	Speedwaysg	MIDDLETON	67 FTE
STATE-SIZE	Schaus Roofing & Mechanical Contractors, Inc.	MANITOWOC	67 FTE
CITY-NEAR	Seljan Company	Lake Mills	132 FTE
CITY-NEAR	Creekwood	Lake Mills	120 FTE
CITY-NEAR	HammerHead Trenchless	Lake Mills	113 FTE
CITY-NEAR	Crystal Farms	Lake Mills	113 FTE
NAT-TCR	Fowler	Fowler, CA	4.2 TCR
NAT-TCR	Bodycote Thermal Processing - South Windsor	South Windsor, CT	4.2 TCR
NAT-TCR	VPM	Los Altos, CA	4.2 TCR
NAT-TCR	Tri-Cities Tri	Kingsport, TN	4.2 TCR
NAT-SIZE	Transportation	Yadkinville, NC	67 FTE
NAT-SIZE	York Main Office	York, NE	67 FTE
NAT-SIZE	Mechanical Design Systems, Inc.	Clinton, MD	67 FTE
NAT-SIZE	Steeltech Reinforcing, Inc.	Los Alamitos, CA	67 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: 2024, 2023, 2022, 2021, 2020, 2019, 2018, 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.