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<br />~, <br /> <br />~1 <br />Description of Backhoe Pits-Maxwell Mine <br />n <br />u <br />Pit Date Depth Description <br />Al 6-19-30 0-4.4' Topsoil, reddish brown. <br /> 4.4-6.0' Alluvium, reddish brown, sand, silt, gravel <br /> and ~=obbles, prominent caliche. <br /> 6.0-13.0' Alluvium, reddish brown, sand, silt, gravel, <br /> cobbles and boulders up to 20". hlo bedrock. <br />A2 6-19-80 0-1.0' Topsoil, reddish brown. <br /> 1.0-9.5' Alluvium, reddish brown sand, silt, gravel, <br /> cobbles and boulders up to 24". Imbricated <br /> pebbles. <br /> 9.5' Bedrock, dark gray carbonaceous shale. <br />Ol 6-19-80 0-2.5' Topsoil, reddish brown. <br /> 2.5-4.6' Alluvium, reddish brown sand, silt, gravel <br /> cobbles and boulders up to 14". Some caliche. <br /> 4.6' Bedrock, dark gray to black carbonaceous shale • <br />D2 6-19-80 0-1.5' Topsoil, reddish brown. <br /> 1.5-9.5' Alluvium, reddish brown sand, silt gravel <br /> and cobbles. Plo bedrock. <br />D3 6-19-80 0-1.5' Topsoil, dark brown. <br /> 1.5-4.4' Alluvium, reddish brown, sand, silt, gravel <br /> and cobbles. Some caliche. <br /> 4.4' Bedrock, tan sandstone and gray shale. <br />El 6-20-80 0-2.0' Topsoil, dark brown, silty. <br /> 2.0-7.3' Alluvium, tan to medium brown, sand, silt <br /> and gravel. <br /> 7.3' Bedrock, tan sandstone and gray-brown shale. <br />E2 6-20-80 0-2.0' Topsoil, dark brown. <br /> 2.0-5.5' Alluvium, light gray to tan sand, silt and <br /> gravel. Water table at approximately 4.0'. <br /> No bedrock. <br />