"I'd say most of the shops run a pretty clean operation," he said.

The main advantage of these vehicles is their clean, quiet operation.

A Police spokesman described it as "a neat and clean operation".

"You don't have an option not to run a clean operation."

Often, recycling is the first step businesses take toward a more efficient and cleaner operation.

Maybe all of that money was not being made by clean, micro-processor operations.

But you have to admit that I run a clean operation.

It'll mean the clean up operation will be much safer.

In the clean up operation, 900 persons were later arrested.

It was an incredible effort by Ed, a very clean operation.