37 construction, construction, supervision services, construction planning, repair and maintenance services in the fields of - industrial facilities, in the field of oil and gas, petroleum, chemical, petrochemical, mining and metallurgical; public and civil works; transportation facilities; aviation facilities; water, wastewater, hazardous waste, industrial and marine waste, solid waste, air pollution control and other environmental facilities; pulp and paper facilities; infrastructures; subterranean storage facilities; and hotel, recreational and housing facilities