Results: 1 - 2 of 2
Jan 20, 1984
Open File Report
… the surficial geology and overburden characteristics of the … (1984): Surficial geology and overburden characteristics: Landon … 1984-21 … Surficial Geology and Overburden Characteristics, Landon …
Apr 30, 1974
Open File Report
… beneath a substantial cover of overburden, where the iron bed was … 50-foot thickness of clay till overburden to expose the iron bed, …