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Concrete and cement manufacturing sits near the intersection of two serious occupational health hazards: silica dust and extreme noise. Ball mills grinding clinker at 115 dBA. Jaw crushers shattering aggregate at 120 dBA. Ready-mix drivers spending hours at batch plants where ambient noise exceeds 90 dBA. Many operations — from independent batch plants to large integrated cement manufacturers — have never implemented complete hearing conservation programs.
Soundtrace analyzes OSHA ITA hearing loss data across concrete, cement, and ready-mix operations. This guide covers the sector's noise profile, OSHA 1910.95 requirements, and where programs most frequently fail.
Concrete and cement manufacturing combines multiple extreme noise sources — crusher, mill, conveyor, pneumatic transfer — with a workforce that often lacks the institutional safety infrastructure present in large automotive or food manufacturing operations. Many concrete producers are mid-sized independent operators whose noise monitoring surveys have never been conducted.
The silica interaction adds complexity. Workers face obligations under two separate OSHA standards: 1910.1053 (Respirable Crystalline Silica) and 1910.95 (Occupational Noise Exposure). Many operations have implemented basic silica controls without ever evaluating their noise exposure obligations.
Aggregate crushing and cement grinding are among the highest-intensity fixed noise sources in manufacturing. Batch plants and ready-mix operations add mobile and variable exposures.
Drivers who load at batch plants where ambient noise exceeds 85 dBA TWA are covered by OSHA 1910.95. Many ready-mix employers incorrectly treat drivers as exclusively covered by DOT regulations. If the driver spends 30+ minutes loading at a high-noise batch plant per shift, a noise dose calculation is required to determine enrollment eligibility.
The concrete and cement sector has shown a rising occupational hearing loss trend consistent with the broader manufacturing pattern. The COVID detection gap in 2020 temporarily reduced reported cases; post-pandemic data shows recovery toward and above pre-pandemic levels.
Concrete and cement hearing conservation programs fail at predictable points: ready-mix driver enrollment, maintenance technician coverage, and outdated noise surveys.
Yes. If a ready-mix truck driver is exposed to noise at or above 85 dBA TWA during work activities — including time at the batch plant during loading — they must be enrolled. Cab noise during driving may or may not meet the threshold; employers should measure rather than assume.
Ball mills and cement grinding mills consistently measure 100–118 dBA at operator positions. Jaw crushers follow closely. At these levels, OSHA requires evaluation of feasible engineering controls — equipment enclosures, vibration isolation — before relying solely on hearing protection.
Silica and noise are regulated by separate OSHA standards requiring separate compliance programs. Many workers in concrete and cement are covered by both. Coordinating medical surveillance reduces administrative burden and increases participation in both programs.
Soundtrace provides in-house audiometric testing for concrete and cement operations — including multi-location ready-mix companies, independent batch plants, and integrated cement manufacturers.
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