Eagle Picher Creta Copper Operation Site is a former copper mining and milling site, located in Jackson County, Oklahoma. Operations began in 1962 and continued until 1977. on the 1,00 acre site, ore was crushed, milled and processed by flotation, which removed 85 percent of the copper, and pumped via slurry pipelines into three large impoundments. Approximately 1.5 million tons of ore was mined in this manner during this time span. The end of a highly unprofitable period in operation of the mine due to escalating costs and declining copper prices caused Eagle Picher to terminate operations.