| Reference | {Deposit:: LE CLAIRE FACIES OF GOWER FORMATION}{Deposit:: INCLUDES SMALL QUARRY IN NW SE SEC. 14}{Deposit:: OP:ALPHA CRUSHED STONE INC.}{Deposit:: IOWA ST HWY COMM AGGREGATE RESOURCE LISTING 1977}{Deposit:: IOWA GEOLOGICAL SURVEY, ANNUAL REPORT 1906, VOL. 17, P. 246.} |