Discouraging Short Deliveries

I've enough bad experiences with short deliveries, and I want to get some updated information to re-check the lines I have painted inside my coal bin.

How many cubic feet (or yards) are in a ton of coal?

I guess each grade of coal is different. I'm talking about rice coal, but give them all if you know them. Thanks

COAL BIN SIZING CHART (Only Approximation)

W x L x H

4 x 8 x 2 = 64 Cubic FT Approx. 1.6 tons
4 x 8 x 3 = 96 Cubic FT Approx. 2.4 tons
4 x 8 x 4 = 128 Cubic FT Approx. 3.2 tons
4 x 8 x 5 = 160 Cubic FT Approx. 4 tons
4 x 8 x 6 = 192 Cubic FT Approx. 4.8 tons
5 x 8 x 2 = 80 Cubic FT Approx. 2 tons
5 x 8 x 3 = 120 Cubic FT Approx. 3 tons
5 x 8 x 4 = 160 Cubic FT Approx. 4 tons
5 x 8 x 5 = 200 Cubic FT Approx. 5 tons
5 x 8 x 6 = 240 Cubic FT Approx. 6 tons
4 x 10 x 2 = 80 Cubic FT Approx. 2 tons
4 x 10 x 3 = 120 Cubic FT Approx. 3 tons
4 x 10 x 4 = 160 Cubic FT Approx. 4 tons
4 x 10 x 5 = 200 Cubic FT Approx. 5 tons
4 x 10 x 6 = 240 Cubic FT Approx. 6 tons
4 x 12 x 2 = 96 Cubic FT Approx. 2.4 tons
4 x 12 x 3 = 144 Cubic FT Approx. 3.6 tons
4 x 12 x 4 = 192 Cubic FT Approx. 4.8 tons
4 x 12 x 5 = 240 Cubic FT Approx. 6 tons
4 x 12 x 6 = 288 Cubic FT Approx. 7.2 tons
5 x 12 x 2 = 120 Cubic FT Approx. 3 tons
5 x 12 x 3 = 180 Cubic FT Approx. 4.5 tons
5 x 12 x 4 = 240 Cubic FT Approx. 6 tons
5 x 12 x 5 = 300 Cubic FT Approx. 7.5 tons
5 x 12 x 6 = 360 Cubic FT Approx. 9 tons

Weight versus volume varies, depending on the density of the coal. A ton of one brand of coal might fill your bin, while a ton of another brand won't.