term paper. Also found in: Thesaurus, Encyclopedia. term paper. n. A lengthy piece of written work required of a student on a topic drawn from the subject matter of a course of study. termâ² paâ²per. n. a long essay or report written by a student as a major assignment over the span of a semester. [1925â30]
1 Drilling contractors can drill multiple wells in a shorter time than they might, otherwise, with just one well per site. 2  Surface drilling is a critical component of the pad drilling process. 3  Wellbore integrity begins surface drilling providers.
It is the opposite of underground mining, in which the overlying rock is left in place, and the mineral removed through shafts or tunnels. Surface mining began in the mid-sixteenth century and is practiced throughout the world, although the majority of surface mining occurs in North America.It gained popularity throughout the 20th century, and is now the predominant form of mining in coal beds such as those in Appalachia and America's Midwest.trip mining is only practical when the ore body to be excavated is relatively near the surface. This type of mining uses some of the largest machines on earth, including bucket-wheel excavators which can move as much as 12,000 cubic meters of earth per hour.