Hire a Landscaper, He will know what to do.
Well a ton is 2,000 lbs. So probably a small car can be a ton. Or you have have 1 ton of rock,soil, sand.
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One ton of river rock will comprise a volume of rock. How much area that covers depends on what depth it is covered to.
The concentration of gold varies from place to place. However, usually you can expect a ton of rock to have almost no gold.
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It depends how densely it is distributed.
A one ton rock would weigh 2000 pounds or 907 kilograms, but the physical size can vary greatly depending on the density and composition of the rock. It could be as small as a basketball or as large as a small car.
It depends on what size/kind of rock you want to use. Let's start with what I'll assume is the largest rock one would use in a rock garden - 3 to 5 in. River Rock: 1 Ton will cover about 80 sq. ft. if you want to make sure there are no "holes" 1 to 3 in. River Rock: 1 Ton will cover about 100 sq. ft. (no holes) 3/4 in. Rock: 1 Ton will cover about 150 sq. feet at 1.5" deep... & 120 sq. ft. at 2" deep 3/8 in. Rock - or crusher finds cover about the same as 3/4 in. Rock, but when using smaller rock, I like to cover at least 2" deep because there's more of a tendency for smaller rock to move around & settle, and you want to make sure you aren't looking at the weed barrier in half a year.
1 ton.
1 ton of feathers, 1 ton of coal, 1 ton of water, etc.