1.   Archeologists contend commercial divers destroy historic wrecks in the search for loot.

2.   After high school he had gone to commercial diving school and was certified as a commercial diver.

3.   In his short career as a commercial diver at Walt Disney World, Davila had his share of close encounters and shaky moments.

4.   Pilkington contends that associations of commercial divers could issue proper credentials showing that divers are trained and proficient enough to do certain kinds of dives.

5.   Still, Blazyk hopes to lease the ship out as a launch platform for ocean research, a staging barge for commercial divers or a treasure hunting vessel.

6.   Archaeologists and historians are plotting to save shipwrecks dotting the ocean floor from commercial divers they say are destroying valuable clues to the past.

7.   Bemis wants to organize an expedition next year using commercial divers, who could work for hours by using a mixture of gases and resting in pressurized chambers.

8.   NEW safety guidelines have been introduced for commercial divers after a diver drowned while clearing a clogged underground drain.

9.   The work of commercial divers includes heavy construction in dark, deep waters and sometimes strong, cold currents.