Lead and the Homestake Gold Mine
When the loose gold in the stream gravels of the northern Black Hills ran out, the real wealth turned out to be locked in the rock. The placer rush that built Deadwood gave way within a few years to hard-rock mining, the slow and capital-hungry business of digging gold-bearing ore out of solid stone and crushing it to free the metal. The center of that work was the town of Lead, a few miles up the gulch from Deadwood, where a claim called the Homestake proved to sit on an ore body of extraordinary size and persistence.
The mine’s early development is tied to a group of investors with deep pockets and long horizons, among them the California capitalist George Hearst, who recognized that the ledge at Lead was worth far more than any single season of mining. They bought up claims, brought in mills and machinery, and organized the operation on a scale the frontier camps had never seen. Where placer mining had been the work of a lone man with a pan, hard-rock mining at Lead meant shafts, stamp mills, hoists, and a permanent workforce, a whole industrial system planted on a steep hillside in the Hills.
A mine that went deep and stayed
What set the Homestake apart was endurance. Many a rich strike played out in a few years, but the ore at Lead continued downward, and the company followed it. Over the decades the workings descended thousands of feet below the surface, becoming one of the deepest mines in the Western Hemisphere, a labyrinth of shafts, levels, and tunnels reaching far into the earth. The mine operated for well over a century, an almost unheard-of run, and in that time it produced an enormous quantity of gold, ranking among the most productive mines the continent has known.
A mine of that scale shaped everything around it. Lead became a true company town, its life organized around the shifts and the whistle, its houses climbing the slopes near the headframes. The company built and supported much of the town’s infrastructure, and generations of families made their living underground or in the mills. The hazards were real, as they are in any deep mine, and the work demanded a large and skilled labor force, drawn over the years from many backgrounds. The wealth that came out of the ground at Lead radiated through the whole region, into the merchants of Deadwood, into the railroads and supply lines, and into the broader economy of the western Dakota country that Rapid City anchored.
Closing and reopening
The Homestake ran into the same forces that eventually catch up with most mines. As the workings grew deeper, the cost of bringing ore to the surface climbed, while the price of gold and the economics of mining shifted around it. Late in the twentieth century the operation finally came to an end, and the mine that had run almost continuously since the 1870s closed its underground work. For Lead, long defined by the mine, the closure was a heavy blow, the loss of the industry that had been the town’s reason for being.
But the great hole in the ground had a second life waiting. The deep, stable rock that had been so good for mining gold turned out to be valuable for an entirely different purpose. Physicists need to work far underground, shielded from the cosmic rays that constantly rain down on the surface, in order to study faint and rare particle events. The depth of the old Homestake workings made them an ideal place for exactly that kind of science, and the abandoned mine was given over to research, becoming the Sanford Underground Research Facility. The shafts that once carried ore now carry scientists down to laboratories built in chambers cut from the rock.
The transformation says something about the long arc of a place like Lead. The same qualities that made the ground worth mining, its depth and the solidity of its stone, made it worth studying once the gold was gone. The town that grew up around a gold mine in the 1870s found itself, well over a century later, home to one of the country’s deepest scientific laboratories, the work underground changed entirely while the great descent into the earth carried on.