In the last century, the world has seen an acceleration of technological development in almost all the fields related to human life, leading to rapid improvement of living standards in most countries. Electricity industry is a basic economic branch, and is also a branch with high importance to...

Given that the purpose of any business, and therefore those working in the field of extraction of coal mineral resources, is aimed at maintaining the equilibrium relationship between revenue and expenditure, the management problem facing firms is to find those methods which allow sizing and...