Between 1961–1964, the Hopi tribal council signed leases with the U.S government that allowed companies to explore and drill for oil, gas, and minerals in Hopi country.
1961年-1964年间，霍皮族部族委员会与美国政府签订了租赁协议，允许企业勘探和开采石油、天然气及霍皮领地内的矿产物。