[Mining Company Parhelion CEO Plans to Build a 137-Meter-Tall Prometheus Statue on Alcatraz Island] According to The Block, Ross Calvin, CEO of Bitcoin mining company Parhelion, is planning to construct a 450-foot (approximately 137.16 meters) tall Prometheus statue on Alcatraz Island in San Francisco and will soon submit the proposal to President Trump. The project may cost $450 million.