The use of geothermal energy is growing rapidly throughout the United States. Geo-Thermal systems use the heat from the earth to create electricity, and to heat and cool buildings. Some geothermal systems pump water underground through piping, allow it to be heated by the earth, and then use the hot water to create electricity or heat/cool buildings. Other systems drill directly into the earth's natural geothermal reservoirs, using the resulting hot water and steam to create electricity. Some geothermal systems use a brine or saltwater solution while others will use glycol. These solutions may pose hazards of their own to workers. Hazards and Controls: The hazards associated with this growing industry include some very familiar safety issues that OSHA already has standards on and information about: (a) Trenching and Excavations; (b) Silica; (c) Personal; Protective Equipment; (d) Electrical; (e) Welding and Cutting; (f) Fall Protection. See more from topic source: https://www.osha.gov/html/a-z-index.html