Oil! by Upton Sinclair

Dad had thought things over, and studied his bank account, and given his decision; they would drill the Ross Junior-Paradise No. 1, and do it quick, and give the "Excelsior Pete" crowd a run for their money; there was no use letting the Big Five think they owned the whole oil industry. Dad would stick here and see things started; so he phoned for his geologist, and hunted up a contractor to figure over a well for water.

Mr. Banning, the geologist, came next day, and gave Bunny's hopes a knock over the head at the very outset. He said Dad was right in his idea that you couldn't count very much on that streak of oil on the top of the ground. You might come on oil-sands one or two hundred feet down, but they wouldn't be likely to amount to much; if that was all you were looking for, you might bring in one of those little drilling-rigs on wheels such as they used back in Pennsylvania! But out here, said Mr. Banning, the real oil-sands lay deep, and you never knew what you'd find till you got there. But he liked the looks of the district, and thought it worth a chance; he spent a couple of days wandering over the hills with Dad and Bunny, studying the slope of the strata, and finally he and Dad chose the side of a hill on the Watkins ranch, not far from the place where Bunny had sat and talked with Ruth while she tended the goats.