Thick sheets of plastic have been used for years to cover closed, solid waste landfills. Called geomembranes, the plastic sheets keep rain water out and odors contained within the waste mass. Besides the potential recovery of beneficial methane gas, the capped area is virtually useless.
The continuing advances of power hand tools receive much attention, and many are linked directly to lithium-ion battery platforms. Tools are lighter, more powerful for their weights, more productive and easier to use.