Features information on oil rig jobs, and employment information for this industry.

Concrete cutting is a process of controlled sawing, drilling and removal of concrete performed by skilled operators using special saws that use diamond impregnated blades. Unlike the old- fashioned dusty "jack hammer" method, modern concrete cutting leaves a smooth attractive finish and utilizes water so as not to create any dust or mess. There are many different kinds of concrete cutting but the most common are wall sawing, core drilling and slab or flat sawing.

When your excavation is complete for the falls, and liner is in place, add your stone. Don''t be in a hurry - try several (or many) combinations and visualize how the water will flow. When satisfied with your arrangement, use black waterfall foam to direct the water over the stone instead of under it. That is, stone that is directly in contact with the liner should sit on a bed of foam so the water goes around or over the stone instead of underneath it.