trimix

For an appalling moment he forgot which was trimix and which was oxygen, the narcotic effect of nitrogen at this pressure playing tricks on his mind.

Crusader Gold Gibbons, David 2007

He began hyperventilating, as if his body were willing him to suck away his last reserve of trimix and lapse into blackness, a merciful oblivion in the face of the lingering horror that lay ahead of him.

Crusader Gold Gibbons, David 2007

He checked his trimix pressure gauge and saw the dial hovering at zero.

Crusader Gold Gibbons, David 2007

Costas was breathing heavily, a great plume of bubbles encircling his exhaust, and he finned furiously as he disconnected Jack's redundant hoses and flipped the quick-release buckle on his cylinder packs, sending the oxygen rebreather and the console backpack with its empty trimix cylinders plummeting into the depths.

Crusader Gold Gibbons, David 2007

Jack's voice sounded peculiar, oddly distant to his own ears, and then he remembered the trimix contained helium.

Crusader Gold Gibbons, David 2007

Without further discussion Jack and Costas put on their yellow Kevlar helmets, and Ben went to each in turn locking the neck seals, activating the twin headlamps on either side and checking that the rebreather and trimix feeds were in place.

Crusader Gold Gibbons, David 2007

Remember, the trimix gives us breathable gas to one hundred and twenty metres.

Crusader Gold Gibbons, David 2007

Jack held on to the axe for a moment, scarcely believing what they had found, and then fed it over his shoulder under the straps of his trimix cylinders, carefully pushing the shaft back until the gilded axe head was wedged safely away from his regulator manifold.

Crusader Gold Gibbons, David 2007

My depth gauge reads one hundred and twenty-three metres, just about the limit for our trimix gas.

Crusader Gold Gibbons, David 2007

With the additional strain of holding up the weight of his cylinder pack above water, the exertion soon started to tell, and he began to breathe his trimix at an alarming rate.

Crusader Gold Gibbons, David 2007