Design and/or construction and operation of gasification systems for waste disposal and/or conversion systems, resource management, electricity generation, steam and heat production, and chemical feedstock production; disposal and/or conversion of carbonaceous material such as waste and coal into various products such as steam, chemical feed stock, heat, electricity, slag, slag-based products and gas, including carbon monoxide and hydrogen, and delivery of the products for sale or for use; valuation realization services for waste disposal and conversion; training services in the operation, maintenance, use and integration of gasification systems including waste disposal and conversion systems, gas refinement systems, slag handling systems alone and together with related power generating and industrial processing sites and plants