About 22% of the energy used in the U.S. comes from natural gas. There are about 300,000 miles of natural gas pipelines in the lower 48 states and 425,000 gas producing wells. The history of natural gas.
thru-hole. A circuit board packaging technique in which the leads (pins) on discrete components and chips are inserted through holes in the printed circuit board and soldered from beneath.
A socket is a hole in the bone where the tooth was removed. Dry sockets occur when the blood clot that formed to protect the bone and nerves becomes dislodged, thus, exposing them to air, food, etc. Food, saliva and bacteria can become lodged in the clots place, causing pain and discomfort.