Wireline Operations. This is part of the Oil and Gas Production Series. Many of todayâs most vital oilfield operations depend directly on the use of wireline, a strong, thin length of wire cable mounted on a powered reel. Wireline is particularly important during completion and production. Field operators can run anything from a basic downhole directional survey to the most delicate gamma ray formation log on wireline.
The first modern solution of general relativity that would characterize a black hole was found by Karl Schwarzschild in 1916, although its interpretation as a region of space from which nothing can escape was first published by David Finkelstein in 1958.
In an astonishing find, Rufus McDonald, a member of a clean-out crew preparing a house outside Chicago for demolition in 2009, discovered a steamer trunk of papers and documents collected by Richard Greener, A.B. 1870, the first black student to graduate from Harvard College.