Quarry exploration; mining extraction; construction, repair and maintenance of installations for conveying and handling of materials; rental of construction equipment; building (construction) supervision
Building Construction and RepairEvaluations, assessments and research in the fields of science and technology provided by engineers; research and design services in the field of mechanical engineering, metallurgy, installations for handling and transporting materials and for extraction of materials; technical project study; surveying (engineers' work, engineering)
Computer and Scientific