Between the 1950's and 1970's, the Sulphur industry continued to grow despite occasional shortages and excesses. In this study originally published in 1970, Hazleton focuses on the Frasch sulphur industry to explore issues such as competing sources of sulphur, the possibilities of sulphur being obtained as a result of pollution-abating policies and the conditions under which future supplies are likely to become available. This title will be of interest to students of Environmental Studies.