The first stage of making cocaine is to finely chop the leaves and dust them with lime or carbonate salt along with a small amount of water. Some manufacturers will use a leaf mulcher to complete this process, others will do it by hand. Next kerosine or diesel fuel is then added to the coca leaf and lime/salt mixture and vigorously stirred for up to three days. This removes the cocaine from the leaf into the liquid. Occasionally this is done using a washing machine or cement mixer. Poorer manufacturers will do this by hand. Once the cocaine has been extracted, the liquid is heated to remove any wax from the coca leaves, then filtered to separate it from the vegetable matter. There will typically be a large amount of liquid that is then mixed with sulfuric acid and mixed again. The acid converts the cocaine free base to cocaine sulfate. The mixture is allowed to sit to allow the separation of the cocaine sulfate which is then mixed with lime or caustic soda. The addition of these chemicals neutralizes the sulfuric acid and the filtered chemical is a gummy, yellow solid. This paste is dried, packaged and shipped to a further laboratory for further extraction and handling.