STEVE MARCUS
Christopher Ross, center, a senior field scientist with Robsin Engineering, and a member of Barrick's Education Committee, speaks during the 25th Annual Southern Nevada Earth Science Education Workshop Wednesday, April 16, 2014. The tour included a trip to include a visit to the Barrick's Bullfrog Mine and the ghost town of Rhyolite. Teachers spent the first day of the workshop focused on classroom activities related to rocks and minerals.