Heavy metals are bio-accumulative and cause a lot of health related problems. It is therefore necessary to ascertain the potential public health and toxicological hazards of some of these heavy metals in food meant for human consumption. This book thereby investigates into the presence and concentration of different heavy metals in cattle hides singed with wood fueled with different substances such as tyres, plastics, engine oil and polystyrene polymers. This book can be used as a handbook by professionals involved in food safety.