Should not have to explain here Seems that some here do not understand weights.
1 ton is 2000 pounds by definition
1 tonne is 1000 kg or 2204.6 pounds.
Gold is reported now in grams per tonne. Years ago before Canada converted to metric it was reported in ounces per ton.
By not understanding this you are showing that anything you say and calculate is questionable.
I am only posting this as I am bored and reading many of the recent posts have given me a chuckle.