The oxygen isn't "used by the earth"; it is recycled by organisms. The total amount of oxygen on planet Earth remains more or less constant.
About 80 inches annually.
15-20" annually
About 30" annually
Sand mining is usually called sand quarrying in Britain. Sand quarrying is when a deposit on land of sand is viable and profitable to be extracted out of the ground - commercially viable is the main criteria! Mining implies going underground to follow a seam of coal, copper, and other materials. It is much cheaper to open-cast rather then go underground. Any quarried sand could be used in several ways, depending on the quality. This is why you may see sharp sand, silver sand, etc, advertised for sale or used in commercial manufacturing of certain products.
sand
428 Tons Worldwide annually.
$174,000 annually
The amount of road salt that is used annually in Canada does fluctuate slightly year to year. In 2013 and estimated 4, 183, 000 tonnes of road salt were used.
40,268.80 annually.
32,240 annually.
39,520 annually.
17,680 annually.
54,080 annually.
35,796.80 annually.
22,505.60 annually.
Sand is much heavier than grit. Sand should be used if you're trying to weigh something down.