Question: what is the primary type of mining that takes place under the bolivian mountain
Answer: silver

title: Cerro Rico
text: Cerro Rico Cerro Rico (Spanish for "rich mountain"), Cerro Potosí ("Potosí mountain") or Sumaq Urqu (Quechua "sumaq" beautiful, good, pleasant, "urqu" mountain, "beautiful (good or pleasant) mountain") is a mountain in the Andes near the Bolivian city of Potosí. Cerro Rico, which is popularly conceived of as being "made of" silver ore, was famous for providing vast quantities of silver for Spain during the period of the New World Spanish Empire. It is estimated that eighty-five percent of the silver produced in the central Andes during this time came from Cerro Rico. As a result of mining operations in the