Education: No degree, certificate or diploma. Tasks: Load, unload and transport construction materials. Read blueprints to determine work requirements . Clean and lubricate cranes. Mix, pour and spread materials such as concrete and asphalt. Perform routine maintenance work. Clean up chemical spills and other contaminants. Remove rubble and other debris at construction sites. Direct traffic at or near construction sites. Experience: 7 months to less than 1 year.