Contractors on site

What sort of harm can you foresee from this situation/activity?

Individuals could be hit / run over by a moving or reversing vehicle :

Individuals could be exposed to harmful substances including dust or fumes :

Individuals could be exposed to additional fire risks / hot equipment :

Individuals could be struck by falling materials :

Individuals could trip and fall over building materials and equipment stored in passageways and fire escapes :

Individuals could fall from height e.g. step ladders, ladders, scaffolds :

Individuals could come into contact with live electrical parts or systems :

Individuals could be exposed to dangerous parts of machinery :