CREW USED A SIPHON HOSE TO CARRY WINDSHIELD WASHER FLUID FROM A 55 GAL DRUM TO A 325 GAL TANK. FLUID IS MIXED W/WATER FOR DRILLING FLUID. DRUM TO HOSE SLIPPED OUT OF THE 325 GAL TANK. EE GRABB ED HOSE TO SUCK ON HOSE TO START SIPHON, IN THE PROCESS, HE SWALLOWED SOME OF THE WASHER FLUID.