On and after June 11, 1946, mining locations made under mining laws of the United States within the following-described lands within the Coronado National Forest, Pima County, Arizona: Sections 25, 26, 35, and 36, and the east half of section 34, township 11 south, range 15 east; sections 30, 31, 32, and 33, and the west half of section 29, township 11