Manuel Hernandez, mill manager at Duoro Mine (Duoro), located near Arequipa, Peru, was considering options for increasing output to take advantage of a recent spike in commodity prices. It was Wednesday, January 25, 2023, and prices for copper and gold, the main products of Duoro, were trading at historical highs compared to their five-year average. The mine manager had asked Hernandez to make recommendations about increasing production, and Hernandez .....more

Teaching note for product W33560.