OPOSSUMS ARE MARSUPIALS. If you open just about any field guide to North American mammals, the opossum will probably be the very first of the 380 or so mammal species described. That's because opossums are our only marsupial, and marsupials are considered very ancient forms of mammals.
operator - an agent that operates some apparatus or machine; the operator of the switchboard. manipulator. causal agency, causal agent, cause - any entity that produces an effect or is responsible for events or results. company operator - an operator who works for a company. driver - the operator of a motor vehicle.
(G) Operator means any person engaged in surface mining who removes minerals, or minerals and incidental coal, from the earth by surface mining or who removes overburden for the purpose of determining the location, quality, or quantity of a mineral deposit.2) When the context indicates, operation or in-stream mining operation means all of the premises, facilities, and equipment used in the process of removing minerals by in-stream mining from a mining area.