Oil rig inspection is a dangerous business. Traditionally roughnecks dangled from a wire, in gale-force winds if needed, to manually log wear and tear on the girders. Assessments include giant chimneys — called flare stacks — that belch fire during million-dollar-a-day shutdowns...  View more from Bloomberg Business News Article Here  by: Olivia Solon August 21, 2015 — 12:01 AM