Building construction including services relating to the construction of buildings, roads, bridges, dams or retaining walls; repair services in regard to buildings, roads, bridges, dams or retaining walls; installation of retaining walls; machinery installation, maintenance and repair; road paving; scaffolding; higher of plant and machinery, including earth moving machines, inclusive of graders, excavators, rollers, loaders, dump trucks, bull-dozers, water trucks, compactors and backhoes; construction of building elements including building blocks and use of moulding apparatus for construction of building elements inclusive of building blocks; crushing equipment; screening equipment; resort development; roadworks, storm water drainage; sewerage reticulation and bulk earthworks; quarry services; operation of a mobile crushing plant; commercial developments; infrastructure projects