Businesses in the other mining and quarrying category extract minerals and geological materials that are not covered by more specific mining categories, such as coal, metal ores, salt or peat. Their activities may include working surface quarries or mineral deposits to obtain materials such as stone, sand, clay, gravel, chalk, slate, gypsum and other non-metallic minerals. The exact materials produced depend on local geology and the intended use of the deposit. Customers can expect the extraction and initial processing of these materials, including breaking, crushing, screening, washing, sorting and grading them for use in construction, manufacturing, agriculture or other industries. Some operators also supply unprocessed mineral material or carry out related work such as preparing extraction sites and managing spoil.