Blocks, concrete and cinder, manufacturing · Arizona

Acker-Stone Industries

Name: Acker-Stone Industries Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Chandler, AZ · ~60 workers · 3 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

C
Average Safety Record: 3.9
Avg TCR: 3.3
Industry avg: 0
Fatalities

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The verdict

Acker-Stone Industries runs at 118% of its industry's injury rate - about level with the typical Blocks, concrete and cinder, manufacturing workplace, earning a grade C.

Acker-Stone Industries: 3.9 TCR = 118% of Blocks, concrete and cinder, manufacturing BLS 3.3 · 3y Form 300A (see methodology below)

Acker-Stone Industries safety composite

Acker-Stone Industries scores strongest on total case rate (tcr) (safer than 54% of same-industry peers) and weakest on dart rate (safer than 46%), 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).

50/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): D 3.9 per 100 workers

Safer than 54% of industry peers
DART rate: D 2.21 per 100 workers

Safer than 46% 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

−0.6

2019→2021

Acker-Stone Industries injury rate improved

Acker-Stone Industries's TCR fell 0.6 from 5.0 in 2019 to 4.4 in 2021. Peak filing year was 2019 at 5.0 TCR. In 2021, DART was 0.57× this establishment's average TCR (severity share of cases).

2019=5.0 · 2020=2.3 · 2021=4.4

OSHA ITA Form 300A scorecard

Establishment book 327331 · Chandler, AZ ABOVE-IND · SMALL

Grade C · TCR 3.9 · 118% of ind

DART 2.2 DART
RANK #12/15
PHOTO Midwest Block - MCIB
BOOK 3y book
INJ 5 inj
SIZE ~60 FTE

Nearest TCR peer: Midwest Block - MCIB (0.0 TCR gap)

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

Basalite Concr

4
This site

3.9
Midwest Block

3.9
Basalite Dixon

3.9
4418 - Shell R

3.9

What this shows Acker-Stone Industries averages 3.9 TCR (118% of the Blocks, concrete and cinder, manufacturing BLS benchmark).

Acker-Stone Industries TCR series: 2019=5 · 2020=2.3 · 2021=4.4 · BLS 3.3

Where Acker-Stone Industries falls in its industry

321 Blocks, concrete and cinder, m establishments

Safer than 54% of graded establishments in this industry, whose median TCR is 4.1.

Grade C

More dangerous than peersSafer than peers

Narrower to Arizona alone (the establishments it most directly competes with for workers and contracts): ranked #12 safest of 15 Blocks, concrete and cinder, m employers in Arizona.

Acker-Stone Industries (60 employees, TCR 3.9) among 29 same-industry peers, split at the industry median of 42 employees and a TCR of 4.1

Acker-Stone Industries has more employees than the Blocks, concrete and cinder, manufacturi median and a lower injury rate than the industry's median TCR of 4.1. 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	4.4	2.2	2
2020	2.3	2.3	1
2019	5.0	5.0	2

OSHA ITA peer cross-reference

Establishment peer ledger

327331 · AZ · Chandler

321 Blocks, concrete and cinder, manufacturing employers nationwide with a credible TCR · 9,594 rated employers in Arizona with headcount on file · 462 employers in Chandler, AZ · 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	Midwest Block - MCIB	KANSAS CITY, MO	3.9 TCR
NAICS-TCR	Basalite Dixon	DIXON, CA	3.9 TCR
NAICS-TCR	4418 - Shell Rock Concrete Plant	SHELL ROCK, IA	3.9 TCR
NAICS-TCR	Basalite Concrete Products LLC. Selma	SELMA, CA	4.0 TCR
STATE-SIZE	Yuma Service Center	YUMA	60 FTE
STATE-SIZE	ISTB-7	TEMPE	60 FTE
STATE-SIZE	Exceptional Community Hospital - Maricopa	MARICOPA	60 FTE
STATE-SIZE	Hernandez Companies, Inc.	PHOENIX	60 FTE
CITY-NEAR	Chandler Campus	Chandler	6,163 FTE
CITY-NEAR	Ocotillo Campus	Chandler	5,428 FTE
CITY-NEAR	6403-64030510	Chandler	3,265 FTE
CITY-NEAR	2643-64030510-510001	Chandler	2,446 FTE
NAT-TCR	44621b - Chesapeake Dc	Chesapeake, VA	3.9 TCR
NAT-TCR	44171l - Shreveport Dc	Shreveport, LA	3.9 TCR
NAT-TCR	Churchill Medical Systems Inc.	Dover, NH	3.9 TCR
NAT-TCR	Sodexo at Univ at Albany Indian Quad	Albany, NY	3.9 TCR
NAT-SIZE	Willitts Equipment Co. Inc.	Exeter, CA	60 FTE
NAT-SIZE	TC Transcontinental Albany	Albany, GA	60 FTE
NAT-SIZE	Hines Kirkland Components (Truss)	Kirkland, IL	60 FTE
NAT-SIZE	Koch Foods of Chattanooga Hatchery	Henagar, AL	60 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.