One story says it was first used during the early days of the telephone to tell an operator that a message had been received.

VOA: special.2010.02.28

The chief of British Petroleum blames failures by the rig's operator, Transocean of Switzerland.

VOA: special.2010.05.04

That's what happened in 2000. Someone reported pollution from one of the CAFOs to state authorities and the CAFO operator blamed Henning.

VOA: standard.2010.05.06

After two men died of heat-related causes in Moscow's metro, a consumer group sued the transit operator to bring down temperatures to the legal maximum of 32 degrees centigrade.

VOA: standard.2010.07.23

Lutzi Matzig, chief operating officer of travel operator Asian Trails, says Thailand began recovering in late 2009, but he says political stability in Thailand is vital to keep the recovery going.

VOA: standard.2010.02.04