Important lists from Washington, naming the principal operators in the black market, documents that any men whose names were listed therein would pay a fortune to suppress!

In March, hidden cameras recorded one of his principal political operators, René Bejarano, accepting wads of cash from a businessman seeking city construction contracts.

One of the principal operators works out of Louisiana.

Of the multitudes of companies involved in producing platinum group metals in these two countries, these are the principal operators:

The principal operators of Free Peers, Inc. were Vincent Falco and Louis Tatta.

The cotton was adulterated with stones, but its arrival caused the principal operators to bring in key operators to prepare the mills.

As of the end of 2006, the principal operators of the field were Chevron Corp. and Aera Energy LLC.

Currently, the principal operators on the field are Chevron Corp. and Aera Energy LLC.

"Then the driver, who is one of the group, takes over as principal operator."

Chevron and Conoco are the principal operators of most of the North Sea properties, while Marathon is the principal operator in Indonesia.