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.
On the bottom of your skull, there is a distinctive hole. The technical name for the opening is the foramen magnum â the âgreat holeâ that the spinal cord and other critical soft tissues run through. This bone aperture has taken on great importance in the ongoing investigation into when the human lineage split from those of other apes.