Fire Assaying - A Practical Treatise on the Fire Assaying of Gold Silver and Lead Including Description of the Appliances Used - by Evans Buskett - Fire Assaying is still the preferred method of Ore Analysis to determine gold content in Lode Ores. The Methods have changed little over the last century. This book is a concise compact version of many larger more extensive versions. This concise version is full of the most pertinent information on fire assaying.