Hello there,
I have recently been introduced to STAN and I would like to model a mining process.
When a mass flow occurs, there are usually quality lab tests undertaken to check for analyts present in the material.
For example:
When mining Copper ore, it is common to specify the percentage copper in the ore.
+ 100 measured tonnes of ore (Mass)
+ 5% Cu lab result (Mass Fraction)
It seems that I when I enter the Mass fraction, I have to put in 0.05 kg/kg rather than 5%.
I understand that they are equivalent but the problem is that it is not common to think about the Cu as kg / tonne, etc.
But when I look at Gold processing, the gold processing is entered as grams / tonne where the Mass Fraction is suitable.
