The drum dumping system is designed for handling drums of toxic, volatile or dusty materials. The lid of the drum is removed and replaced with a special cone adaptor which incorporates a valve. The drum is then elevated, inverted and locked into a receiving hopper forming a dust tight seal. The valve is opened, allowing the drum contents to empty into the feed hopper and integral flexible screw conveyor. The material can then be fed direct to process machinery, without an operator coming into contact with the material.