Palmer C. Sweet

• Analyses of clay, shale, and related materials--southern counties
• Clay material testing program, 1957-1986
• Clay-material resources in Virginia
• Clay-material samples collected 1981-1984
• Coal, oil and gas, and industrial and metallic minerals industries in Virginia, 1985
• Coal, oil and gas, and industrial and metallic minerals industries in Virginia, 1986-1987
• Coal, oil and gas, and industrial and metallic minerals industries in Virginia, 1988-1989
• Coal, oil and gas, and industrial and metallic minerals industries in Virginia, 1993
• Coal, oil and gas, and industrial and metallic minerals industries in Virginia, 1994
• Coal, oil and gas, and industrial and metallic minerals industries in Virginia, 1995
• Coal, oil and gas, and industrial and metallic minerals industries in Virginia, 1996
• Coal, oil and gas, and industrial and metallic minerals industries in Virginia, 1998