Metallurgy is an interdisciplinary subject consisting of geology, mining physics, chemistry and other applied offshoots of science. Currently its technological advancement is theory based application while contrary to it in ancient times it was empirical one (based on experiments and observations). This empirical based metallurgical advancement of ancient India was in no way inferior to the theory based advancement modern times. The core of this book is to explain limpidly the theoretical scientific principles hidden in pyrometallurgical advancement of the yore in India. The vital role of geoecology and mineral resources of the country in the furtherance of metallurgical innovation is also one of the prime aspects of this monograph.