Decontamination of hazardous materials; production of energy; disposal of waste, namely, destruction of waste for purposes of utilization of the waste destruction products; custom assembling of materials being products for others; incineration of waste and trash; waste treatment; recycling of waste and trash; metal refining services, namely, gold, silver, dental scrap refining; rental of electricity generators; sorting of waste and recyclable material; metal treating; air purification; proces...