Education: No degree, certificate or diploma. Tasks: Load, unload and transport construction materials. Mix, pour and spread materials such as concrete and asphalt. Assist in aligning pipes during pipeline construction. Assist in drilling and blasting rock on construction sites. Assist in framing houses, erecting walls and building roofs. Clean and pile salvaged materials. Clean up chemical spills and other contaminants. Remove rubble and other debris at construction sites. Direct traffic at or near construction sites. Work conditions and physical capabilities: Fast-paced environment. Work under pressure. Physically demanding. Handling heavy loads. Experience: 1 year to less than 2 years.