3-D sandwich preforms and a method to provide the same

Adaptor for setting a self-drilling, chemically anchored,...

Adhesively secured anchor rod

Adjustable anchored bulkhead system

Adjustable cap for retaining walls

Adjustable cap unit

Adjustable connection system for precast facing panel and soldie

Adjustable scaffold shoring accessory

Adjustable self locking shoring strut

Adjustable trench box and spreader bar

Advance mechanism for a mine roof support assembly

Advance mechanism for a mine roof support assembly

Advance mechanism for a mine roof support assembly

Advance mechanism for a mine roof support unit

Advance mechanism for a mine roof support unit

Advance mechanism for mine roof support units

Advanceable mine roof supports

Advancing support

Aggregate extruder

Alignment device