The samples studied as workers and labour, Thailand, Cambodia, the number of security officers and 3 people from three establishments in Bangkok and separate security measures in the query is a 12 Chapter 1 General category. 2.3-construction category. the categories of electrical and fire protection. 4. Chapter 5 drilling and excavation construction category. with walls and sheet piling. 6. category support. 7. the categories of machines and cranes 8. categories of temporary materials, freight elevators and elevators temporarily rope category. Wire rope and pulley 10. category work in places where there is danger of falling from heights. 11. category demolition destroyed 12. category personal security protection.
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