Ann: Quarterly Report - March 2018, page-149

You obviously aren't in the mining industry, nor have a solid understanding of mineral extraction.

We aren't making cakes.

Ore varies in properties and distribution in a complex fashion, which means that the quantity and quality of material mined will vary regardless of the period in question, pending targeted product quality, quantity and/or production capacity.

The company had expectations around grade and concentrate production for the period; what's so strange about that?

Those expectations were different than those from the last period; what's so strange about that?

The average grades and product quantity were lower than the previous quarter. There is nothing particularly abnormal or necessarily negative about that.

It's called mining. The mining company isn't too bothered by these figures, nor am I.

Maybe you "should help out" when you have a sound understanding of the subject!

Good luck with your trading