Mechanical contractors · Maryland

Harris Mid-Atlantic, LLC

Name: Harris Mid-Atlantic, LLC Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Capitol Heights, MD · ~188 workers · 4 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

A
Excellent Safety Record: 1.1
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Harris Mid-Atlantic, LLC runs at 38% of its industry's injury rate - far safer than the typical Mechanical contractors workplace, earning a grade A.

Harris Mid-Atlantic, LLC: 1.1 TCR = 38% of Mechanical contractors BLS 2.8 · 4y Form 300A (see methodology below)

Harris Mid-Atlantic, LLC safety composite

Harris Mid-Atlantic, LLC scores strongest on total case rate (tcr) (safer than 86% of same-industry peers) and weakest on fatalities (safer than 51%), 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).

75/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): B 1.06 per 100 workers

Safer than 86% of industry peers
DART rate: B 0 per 100 workers

Safer than 80% of industry peers
Fatalities: D 0

Safer than 51% 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

−2.1

2018→2021

Harris Mid-Atlantic, LLC injury rate improved

Harris Mid-Atlantic, LLC's TCR fell 2.1 from 2.1 in 2018 to 0.0 in 2021. Peak filing year was 2020 at 2.1 TCR. In 2021, DART was 0× this establishment's average TCR (severity share of cases).

2018=2.1 · 2019=0.0 · 2020=2.1 · 2021=0.0

OSHA ITA Form 300A scorecard

Establishment book 238220 · Capitol Heights, MD AT/BELOW-IND · MID

Grade A · TCR 1.1 · 38% of ind

DART 0.0 DART
RANK #19/121
PHOTO OCE Mechanical, LLC
BOOK 4y book
INJ 8 inj
SIZE ~188 FTE

Nearest TCR peer: OCE Mechanical, LLC (0.0 TCR gap)

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

This site

1.1
OCE Mechanical

1.1
Nixco Plumbing

1.1
DMI Corp.

1.1
HMI Mechanical

1.1

What this shows Harris Mid-Atlantic, LLC averages 1.1 TCR (38% of the Mechanical contractors BLS benchmark).

Harris Mid-Atlantic, LLC TCR series: 2018=2.1 · 2019=0 · 2020=2.1 · 2021=0 · BLS 2.8

Where Harris Mid-Atlantic, LLC falls in its industry

5,793 Mechanical contractors establishments

Safer than 86% of graded establishments in this industry, whose median TCR is 3.3.

Grade A

More dangerous than peersSafer than peers

Narrower to Maryland alone (the establishments it most directly competes with for workers and contracts): ranked #19 safest of 121 Mechanical contractors employers in Maryland.

Harris Mid-Atlantic, LLC (188 employees, TCR 1.1) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Harris Mid-Atlantic, LLC has more employees than the Mechanical contractors median and a lower injury rate than the industry's median TCR of 3.3. 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	0.0	0.0	0
2020	2.1	0.0	5
2019	0.0	0.0	0
2018	2.1	0.7	3

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · MD · Capitol Heights

5,793 Mechanical contractors employers nationwide with a credible TCR · 7,213 rated employers in Maryland with headcount on file · 64 employers in Capitol Heights, MD · 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	OCE Mechanical, LLC	BROKEN ARROW, OK	1.1 TCR
NAICS-TCR	Nixco Plumbing Inc.	MASON, OH	1.1 TCR
NAICS-TCR	DMI Corp.	CEDAR HILL, TX	1.1 TCR
NAICS-TCR	HMI Mechanical Systems, Inc.	WATERLOO, NY	1.1 TCR
STATE-SIZE	Daly Computers, Inc.	FREDERICK	188 FTE
STATE-SIZE	Cambridge	CAMBRIDGE	188 FTE
STATE-SIZE	WM 6653	GAITHERSBURG	188 FTE
STATE-SIZE	Glenmont Rail Division	SILVER SPRING	188 FTE
CITY-NEAR	237482-WASHINGTON NDC	Capitol Heights	656 FTE
CITY-NEAR	WASHINGTON NDC_1434471	Capitol Heights	637 FTE
CITY-NEAR	237481-SO MARYLAND MD P&DC	Capitol Heights	444 FTE
CITY-NEAR	SOUTHERN MARYLAND_1441071	Capitol Heights	370 FTE
NAT-TCR	Forum Energy Technologies - Fort Worth	Fort Worth, TX	1.1 TCR
NAT-TCR	099 Indianapolis, IN	Indianapolis, IN	1.1 TCR
NAT-TCR	Foremost Industrial Technologies	Peoria, IL	1.1 TCR
NAT-TCR	REG Geismar	Geismar, LA	1.1 TCR
NAT-SIZE	Palace at Kendall	Miami, FL	188 FTE
NAT-SIZE	Mn02-Dakt-Minnesota Redwood Falls	Redwood Falls, MN	188 FTE
NAT-SIZE	Judlau-TC Electric JV All projects/location	Flushing, NY	188 FTE
NAT-SIZE	Tps, LLC	New Columbia, PA	188 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, 2018. 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.