of your concrete wall. By Bill Leonard. You can say a great deal in favor of cement block (or, if you prefer, concrete block) building. Itâs fairly fast, reasonably easy, particularly in small projects, and incredibly cheap if you are willing to scrounge a little and salvage the block.
MGW may refer to. 1  An abbreviation for Media gateway, a translation unit between disparate telecommunications networks. 2  The IATA airport code for Morgantown Municipal Airport. 3  maximum gross weight: the abbreviation m g w appears on road signs.
OPGW, or OPTGW cables stand for Optical Ground Wire and they are a type of overhead optical fiber cable.OPGW cables are usually installed on normal voltage and extra high voltage power lines.he OPGW cable is installed between the tops of high-voltage electricity pylons. The conductive part of the cable serves to bond adjacent towers to earth ground, and shields the high-voltage conductors from lightning strikes. The optical fibers in the cable are used for transmission of data.