send up a tub every five minutes."

"Want the team yet?" bawled the teamster, from another shack.

"No," Harry answered. "Not for a half an hour yet."

That question was enough to cause the young engineer to forget
that he had intended to inspect the tub-load of ore. He strolled
back to the head of the shaft. The wind was biting keenly today.
Harry was dressed in the warmest clothing he had, yet his feet
felt like lumps of lead in his shoes.

"Arizona may be hot, but I'd rather do my mining down there, anyway,"
thought the young engineer. "If I could move about more, this
wouldn't be so bad."

Just off of the shaft was a rough shack several feet square which
contained a small cylinder of a wood stove. There was a fire
going in the stove, now, but Harry knew from experience that if
he went in to the stove to get warm, he would only feel the cold
more severely when he came out again.

"Say, I don't know why I couldn't run that furnace as well as
Tom, and he likes this cold stuff better than I do," murmured
Hazelton. "I am going to see if he won't swap jobs for a couple
of hours."

"Getting anything out of those ore-tests of yesterday's dump?"
Harry demanded, entering their shack.

"Not so much," Tom replied cheerily. "We're in a bad streak of
stuff, Harry. But I thought you were watching the dump. What's
the matter? Too cold out there?"

"Yes," nodded Harry. "I feel like a last year's cold storage
egg. Don't you want to spell me a bit out there, Tom? I can
run the furnace in here."

"Certainly," Reade agreed, leaping up. "There's nothing to do,
now, but weigh the button when it cools."

"Did you really get a button?" Harry asked, casually, as he drew
off his heavy overcoat.

"Yes; a small one."

"How much ore did you take it from?"

"About two tons, I should say."

"Then, if the button is worth sixty cents," mocked Harry, "it
will show that our ore is running thirty cents to the ton."

"Oh, we'll have better ore, after a while," Tom laughed.

"We've got to have," grunted Hazelton, "or else we'll have to
walk all the way to our next job."

"Just weigh the button, when it cools, and enter the weight on
this page of the notebook," directed Reade, then went for his
own outdoor clothing. "Have you been inspecting the dump as the
stuff came up?"

"You'll think me a fool," cried Harry, "but I totally forgot it."

"No matter," Tom answered cheerily. "I've been doing bench work
so long