IO

Processed industrial minerals for industrial, agricultural and manufacturing uses; proppants for use in oil well and gas well hydraulic fracturing operations; hydraulic fracturing sands; coated and surface treated industrial sands for industrial and manufacturing applications; industrial silica; industrial silica sand; industrial filtering sands and refractory sands for industrial and manufacturing applications; silicates for industrial and manufacturing applications; resin-coated proppants for use in the oil and gas

Ball sealers for use in sealing holes, perforations and fractures in well casings used in oil well and gas well hydraulic fracturing operations

Sand; gravel packing sands, namely, monocrystalline silica used for filtering during drilling in the oil and gas industries; specialty silica sand for general industrial use; silica aggregates and carriers for building or construction; proppant for use in oil well and gas well hydraulic fracturing operations