If only the riffles were saving it and the tables catching the fine gold!
This he could not know until the clean-up and he did not mean to stop until he had brought in the last load he dared before a freeze. So far the weather had been phenomenal, the exceptional open fall had been his one good piece of luck. Under usual weather conditions, to avoid cleaning up through the ice he would have been obliged to have shut down at least a month before.
So the work kept on intermittently until an incredibly late date in November. The leaves of the poison oak had turned crimson, the tall tamaracks in the high mountains were gold, frost crystals glittered each morning on the planks and boards, but Big Squaw creek kept running steadily and the sunshine soon melted the skim ice that formed over night.
By this time Bruce had a fresh worry. It kept him awake hour after hour at night. The mercury was not looking right where it showed behind the riffles. It was too lively. There was something in it, of course, but not enough to thicken it as he had hoped. He could see the flakes of gold sticking to it as though it had been sprinkled with Nepaul pepper but the activity of it where it showed in quantity alarmed him more than he would confess to himself.
The change of weather came in the night. That day he started to clean-up. A chill wind was blowing from the east and the sky was dark with drab, low-hanging clouds when Bruce put on his hip-boots and began to take up riffles. A thin sheet of water flowed through the boxes, just sufficient to keep the sand and gravel moving down as he took up the riffles one at a time and recovered the mercury each had contained.
Bruce's feet and fingers grew numb working in the icy water with a scrubbing brush and a small scoop but they were no colder than the cold hand of Premonition that lay heavy upon him.
Behind the riffles at the top of the first box the mercury was amalgam--all that he could have wished for--beyond that point it suddenly stopped and all that he recovered as he worked down looked to be as active as when he had poured it from the flask.
What was wrong? He asked himself every conceivable question as he worked with aching hands and feet. Had he given the boxes too much grade? Had he washed too fast--crowded the dirt so that it had not had time to settle? Was it possible that after all the gold was too light and fine to save in paying quantities?