Open Cut Geology

The Open Cut in Lead, SD offers a geologic glimpse on the formation of the region and North America. Bill Roggenthen's talk will focus on the relation between the exposures of rock in the Open Cut and local-regional geology.

Hoistroom Virtual Tour

Anyone who has driven through Lead, South Dakota has seen the iconic Yates Headframe standing high atop a mountain. The headframe stands over a mile-deep shaft and houses the pulley system for the cages. The Yates cage easily makes up to twenty trips up and down the shaft daily, delivering people and supplies to different levels of the facility. The real power, however, rests in the Yates Hoistroom, an unassuming brick building sitting just a few hundred feet from the base of the towering headframe.