Task 5. Choose the correct items 1. The primary/secondary explosion can cause the dust to become airborne. 2. Combustible dust is highly deadly and can cause immense explosion / damage to the industry. 3. Employers and employees are often unaware of the risks of industrial fires and chemicals/ explosions. 4. A secondary explosion is generally caused by the ignition / manufacturing of the dust cloud. 5. Almost all materials in dust form may become deadly / combustible. 6. It's difficult to contain /accumulate industrial fires and explosions. 7. The entire manufacturing / facilities may be damaged and broken down by the secondary explosions. 8. It's impossible to eliminate/ overlook industrial dust entirely.