The proximal end of the ulna articulates with the trochlea of the humerus. To enable movement at the elbow joint, the ulna has a specialised structure, with bony prominences for muscle attachment. Important landmarks of the proximal ulna are the olecranon, coronoid process, trochlear notch, radial notch and the tuberosity of ulna: 1  Olecranon â A large projection of bone that extends proximally, forming part of trochlear notch. 2  Coronoid process â This ridge of bone projects outwards anteriorly, forming part of the trochlear notch.
Metallurgical coke is produced by the destructive distillation of coal in coke ovens. Prepared. coal is heated in an oxygen-free atmosphere (âcokedâ) until most volatile components in the coal are. removed. The material remaining is a carbon mass called coke. Metallurgical coke is used in iron and steel industry processes (primarily in blast furnaces) to. reduce iron ore to iron. Over 90 percent of the total coke production is dedicated to blast furnace. operations.
By 1875, coke (which is made from coal) replaced charcoal as the primary fuel for iron blast furnaces to make steel. The burning of coal to generate electricity is a relative newcomer in the long history of this fossil fuel.It was in the 1880s when coal was first used to generate electricity for homes and factories.y 1875, coke (which is made from coal) replaced charcoal as the primary fuel for iron blast furnaces to make steel. The burning of coal to generate electricity is a relative newcomer in the long history of this fossil fuel.