Combustion chamber having reduced NO.sub.X emissions
Combustion control system for bituminous drum mixers
Compact enclosable asphalt plant
Concrete production apparatus
Counter-flow asphalt plant with combustion zone feed and...
Counter-flow asphalt plant with multi-stage combustion zone over
Countercurrent drum mixer asphalt plant
Counterflow asphalt drum mixer producing less hydrocarbon emissi
Counterflow drum mixer for making asphaltic concrete and methods