POWERS, H. A., 1947 , DIATOMITE DEPOSITS OF SOUTHWESTERN IDAHO: IDAHO BUR. MINES AND GEOLOGY MIN. RES. REPT. NO. 4 , 27 P1947 RECON IDAHO BUREAU OF MINES AND GEOLOGY MIN. RES. REPT. NO.POWERS, H. A., 1947 , IDAHO BUREAU OF MINES AND GEOLOGY MIN. RES. REPT. NO. 4