(To receive weekly emails of conversations with the world’s top CEOs and business decisionmakers, click here.) Nicole Horseherder lives in Hard Rock, Ariz., population 53. Hard Rock sits on the Black Mesa, which takes its name from the numerous coal seams …(To receive weekly emails of conversations with the world’s top CEOs and business decisionmakers, click here.) Nicole Horseherder lives in Hard Rock, Ariz., population 53. Hard Rock sits on the Black Mesa, which takes its name from the numerous coal seams …