Machine shops · Washington

Proto Technologies Inc

Name: Proto Technologies Inc Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Liberty Lake, WA · ~48 workers · 3 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

A
Excellent Safety Record: 1.5
Avg TCR: 3.3
Industry avg: 0
Fatalities

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The verdict

Proto Technologies Inc runs at 45% of its industry's injury rate - far safer than the typical Machine shops workplace, earning a grade A.

Proto Technologies Inc: 1.5 TCR = 45% of Machine shops BLS 3.3 · 3y Form 300A (see methodology below)

Proto Technologies Inc safety composite

Proto Technologies Inc scores strongest on total case rate (tcr) (safer than 82% 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).

72/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): B 1.49 per 100 workers

Safer than 82% 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%).

Rising injury rate

Proto Technologies Inc: 0.0 → 2.5 TCR

Peak year 2023 @ 2.5 TCR · DART/TCR 0× in 2023

Proto Technologies Inc's TCR rose 2.5 from 0.0 in 2021 to 2.5 in 2023. In 2023, DART was 0× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 332710 · Liberty Lake, WA AT/BELOW-IND · SMALL

Grade A · TCR 1.5 · 45% of ind

DART 0.0 DART
RANK #6/30
PHOTO E & R Machine Inc.
BOOK 3y book
INJ 2 inj
SIZE ~48 FTE

Nearest TCR peer: E & R Machine Inc. (0.0 TCR gap)

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This site

1.5
E & R Machine

1.5
Advanced Machi

1.5
Main Shop

1.5
GPR Company, I

1.5

What this shows Proto Technologies Inc averages 1.5 TCR (45% of the Machine shops BLS benchmark).

Proto Technologies Inc TCR series: 2021=0 · 2022=1.9 · 2023=2.5 · BLS 3.3

Where Proto Technologies Inc falls in its industry

1,821 Machine shops establishments

Safer than 82% of graded establishments in this industry, whose median TCR is 3.5.

Grade A

More dangerous than peersSafer than peers

Narrower to Washington alone (the establishments it most directly competes with for workers and contracts): ranked #6 safest of 30 Machine shops employers in Washington.

Proto Technologies Inc (48 employees, TCR 1.5) among 29 same-industry peers, split at the industry median of 48 employees and a TCR of 3.5

Proto Technologies Inc has more employees than the Machine shops median and a lower 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	Injuries
2023	2.5	1
2022	1.9	1
2021	0.0	0

OSHA ITA peer cross-reference

Establishment peer ledger

332710 · WA · Liberty Lake

1,821 Machine shops employers nationwide with a credible TCR · 10,147 rated employers in Washington with headcount on file · 21 employers in Liberty Lake, WA · 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	E & R Machine Inc.	LOCKPORT, NY	1.5 TCR
NAICS-TCR	Advanced Machining Techniques, Inc	MORGAN HILL, CA	1.5 TCR
NAICS-TCR	Main Shop	DIANA, TX	1.5 TCR
NAICS-TCR	GPR Company, Inc.	FAIRFIELD, NJ	1.5 TCR
STATE-SIZE	Cold Creek Vineyards #8	WOODINVILLE, WA	48 FTE
STATE-SIZE	F/T Constellation	SEATTLE	48 FTE
STATE-SIZE	F/T Defender	SEATTLE	48 FTE
STATE-SIZE	Esperanza Ridge LLC	EAST WENATCHEE	48 FTE
CITY-NEAR	24081 E. Mission Ave	Liberty Lake	500 FTE
CITY-NEAR	PC Open Incorporated	Liberty Lake	236 FTE
CITY-NEAR	ACCRA-FAB, INC.	Liberty Lake	178 FTE
CITY-NEAR	Altek, Inc.	Liberty Lake	173 FTE
NAT-TCR	MasterScapes	Abilene, TX	1.5 TCR
NAT-TCR	Fs-St Catherine Jax	Jacksonville, FL	1.5 TCR
NAT-TCR	Sodexo at Thornton Township Hs Dist 205	South Holland, IL	1.5 TCR
NAT-TCR	Salisbury Hatchery #2	Salisbury, MD	1.5 TCR
NAT-SIZE	Farm Technology Corporation Fram	Mosca, CO	48 FTE
NAT-SIZE	Sodexo at Glenbard High School Dist 87	Glen Ellyn, IL	48 FTE
NAT-SIZE	Nor Cal Shuttle	Livingston, CA	48 FTE
NAT-SIZE	Parts Authority Woodside	Woodside, NY	48 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, 2021. 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.