One cubic meter of water is 264.2 gallons. Since one gallon of water weighs about 8.35 pounds, the total weight of 264.2 gallons is: 264.2 x 8.35 = 2,206.07 pounds of water in one cubic meter.
Salk cake = 1442
Salt course = 801
Salt fine = 1201
The weight and density of other bulk items can be found at:
http://www.simetric.co.uk/si_materials.htm
How much does a cubic metre of concrete weigh? One cubic metre of concrete weighs around 2.4 tonnes. That equates to about 20 wheelbarrow loads per m3!