The body loses heat quickly when clothes are wet. Workers should wear layers of vented clothing, insulated gloves and footwear. Where possible, build barriers around the worksite to block the wind. Supply workers with warm beverages that do not contain caffeine or alcohol. This may last for minutes, hours or days.
Normal hearing does return.
You do not need fancy equipment to know if you are exposed to noisy conditions. The level of sound is measured in units called decibels. The abbreviation for decibels is dB. On the decibel scale, each time the number of decibels goes up by three, the level of the noise is doubled. Examples of common noises and their decibel levels are shown in the chart below. Engineering Controls Noisy machinery can be enclosed, isolated or rigged with equipment to muffle sound.