Littleton Lumber and Building Center

Concord Lumber Corporation

55 White Street, Littleton, MA 1460
Building board (e.g., fiber, flake, particle) merchant wholesalers (NAICS 423310)

DART 18.35 9 recordable cases · 46 avg employees · 87,171 hours worked

This establishment vs. the industry

The DART rate at this establishment is about 3.8× the industry median.

This establishment: 18.35
Industry median (Lumber (e.g., dressed, finished, rough) merchant wholesalers, n=576): 4.82

Reported injury and illness, 2024

Fatalities0 Days-away-from-work cases8 Restricted-duty / transferred cases0 Other recordable cases1 Total recordable cases9 Days lost to injury46

Injury rates (per 100 FTE-year, OSHA standard)

DART rate18.35 (days away + restricted/transferred) DAFW rate18.35 (days away from work only) Total recordable rate (TRIR)20.65 (all OSHA-recordable cases) Annual average employees46 Total hours worked87,171
What these numbers mean. An OSHA-recordable case is a work-related injury or illness that resulted in death, days away from work, restricted work, transfer to another job, medical treatment beyond first aid, loss of consciousness, or significant injury diagnosed by a physician. DART rate is the OSHA-standard incidence measure — calculate it as (cases with days away + restricted/transferred) × 200,000 / hours worked. The 200,000 hours normalizes to 100 full-time-equivalent workers over a year. National average DART across all industries is around 1.7; high-risk industries (skilled nursing, warehousing, courier) routinely exceed 5.

Source: OSHA ITA 300A Summary Data, calendar year 2024 filings (downloaded 2026-05-22).

OSHA Lookup · workplace-injury data from OSHA ITA 300A 2024 · About / methodology