The financial base of the Naxalites is diverse because the organization finances itself from a series of sources. The mining industry is known to be a profitable financial source for the Naxalites, as they tend to extort about 3% of the profits from each mining company that operates in the areas under Naxal control.[78] In order to continue mining operations, these firms also pay the Naxalites for "protection" services which allows miners to work without having to worry about Naxalite attacks.[79] The organization also funds itself through the drug trade, where it cultivates drugs in areas of Orissa, Andhra Pradesh, Jharkhand, and Bihar.[80] Drugs such as marijuana and opium are distributed throughout the country by middlemen who work on behalf of the Naxalites.[81] The drug trade is extremely profitable for the movement, as about 40% of Naxal funding comes through the cultivation and distribution of opium.[82]