A heavy-duty hydraulic worm-drive rotator allows for speedy angle adjustment on Omef excavator-mounted tree shears. This vastly improves the range of movement, allowing branches to be cut in different ...

Torches with cutting power provided by acetylene, propane, argon or oxygen gas; iron or aluminum powders; or compressed air (and combinations of these elements) have long provided an image of activity ...

Hydraulic fracturing in the presence of natural fractures causes a complex network of fractures to form because of shear and tensile failure. During hydraulical fracturing, shear failure in a ...