Add Yahoo as a preferred source to see more of our stories on Google. Large piles of fill gravel and fill sand sitting outside - cortex-film/Shutterstock Backfilling ...

Backfill mining techniques offer a suite of methods to control surface subsidence by replacing or supporting the void left by mineral extraction. Techniques range from cemented paste and hydraulic ...

Des Moines will see a $5.3 million annual loss from the backfill, according to City Manager Scott Sanders. Central Iowa city administrators are seeking solutions after the Iowa Legislature voted to ...

The Backfill Conveyor allows you to backfill open trenches faster, safer and easier. Excavator operator places material in the hopper and it is transported the length of the conveyor into the trench ...