The Greensboro Corporation specializes in FLASH-FILL. FLASH-FILL is a fast setting flowable backfill material that is made from 100% coal fly ash with a proportional blend of water. FLASH-FILL is delivered to construction or maintenance project sites by volumetric mixer trucks. FLASH-FILL is mixed on site as a very fluid material that fills all void areas that may be inaccessible to other types of backfill. FLASH-FILL is a superior alternative to compacted backfill which takes time and labor to install. FLASH-FILL requires no labor for installation and no equipment for compaction. Even with its quick setting characteristics, FLASH-FILL can easily be re-excavated with hand tools or machinery.