0 to fill a hole created by digging or drilling, especially using some of the material that has been taken out: --
1 to replace workers after jobs have been made available: --
2 material used to fill a hole that has been created by digging, etc.: --
Some of the fluorite produced from the lead mines was used as backfill underground.
In such cases the weeps consist of small-diameter plastic, clay or metal pipes extending through the wall to a layer of porous backfill.
The smaller format gave the company greater flexibility to enter new markets and backfill existing ones.
The sand was mostly used as the backfill material in the region coal mines.
Instead, it is primarily used as structural fill or trench backfill.
The walls are infilled with granular soil, with or without reinforcement, while retaining the backfill soil.
Zone systems may include standby, move-up, or backfill points.
Over 90% of the material in the building was recycled for other uses or as backfill.
There are also volunteer firefighters who can backfill the station or respond to incidents with additional apparatus, when needed.
