The key mineral resources found in Himachal Pradesh include copper ore, gold, galena, and gypsum. Mineral resources are essential for industrial and economic development as they are used in construction, engineering, and chemical industries. Copper ore is primarily used to conduct electricity, while gold is used for jewelry and space equipment. Galena is an important source of lead and silver, and gypsum is used as a fertilizer and building material. These mineral resources are important to the economy of Himachal Pradesh.