www.dec.ny.gov/docs/materials_minerals.../rdsgeisch50911.pdf?CachedSimilarThe proppant holds the fractures open, allowing hydrocarbons to flow into the
www.dec.ny.gov/docs/materials_minerals.../rdsgeisch50911.pdf?CachedSimilarThe proppant holds the fractures open, allowing hydrocarbons to flow into the