In this building, workers carried out the reduction process of pulverizing lump quicklime into smaller sizes primarily for agricultural use. They brought quicklime five to eight inches in diameter from the kilns and fed it on a chute to the grinder, also called the hammer mills, which broke it into smaller pieces. Another process, called slaking, could then reduce the quicklime into powder by applying water to a pile of quicklime. Workers bagged the powdered lime and stored it in large warehouses east of the kilns and along the railroad tracks. Farmers purchased lime at the site, or it was shipped by rail or truck to be sold elsewhere. Lime from Fountain Rock was used primarily to balance the pH and reduce the acidity of farmers' fields, but it could also be used for whitewash, preserving foods, mortar, plaster, medicine, and disinfection of animal pens and outhouses.