The dust created during the concrete grinding process could be hazardous to the operator and bystanders. According to OSHA's 2017 ruling on crystalline silica exposure, and under the new silica standards, workers are limited to a permissible exposure level (PEL) of 50 micrograms or respirable crystalline silica per cubic meter of air over an eight-hour period. Employers are required to take measures to limit workers' silica dust exposure and provide training for workers about the hazards of silica dust and how to limit exposure.
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