It is difficult to say which construction trade is the most dangerous, as different trades come with their own unique hazards. However, some trades that are considered to be high-risk include:

• Roofing: Roofers often work at great heights, and falls are a leading cause of injury and death in this trade. They are also exposed to the risks of fire and electrical hazards.

• Ironworking: Ironworkers often work with heavy machinery and materials at great heights, and falls are a leading cause of injury and death in this trade.

• Electrical work: Electricians are at risk of electric shock and electrocution, as well as burns and fires.

• Plumbing: Plumbers are often required to work in confined spaces, and can be exposed to hazardous materials such as lead and asbestos.

• heavy equipment operator: The operator should be well trained to handle heavy machinery which could be the cause of injuries if the operator is not well trained

It's important to note that all construction trades come with inherent risks, and employers and employees must take steps to minimize those risks and ensure a safe working environment.