Raw composition for carbon articles
Reconstituted asphalt paving compositions
Recovery and handling of asphalt containing a high...
Recovery of bitumen from bituminous sand
Recovery of bitumen from bituminous sand with control of...
Recovery of heavy minerals from a tar sand
Recycling aerated scavenged middlings to conditioning step...
Removal of water from bituminous emulsion
Restoration of light hydrocarbon gases to tar sand