Construction Safety Question

What are some examples of hazard control methods that are recommended in haszard prevention and reduction techniques?  Do you feel that some of these methods are more important to use than others?  Which do you believe reduces the possibliity of a future hazard?  Explain your answer

The response need to be at least 200 words in length.  All sources used  must be referenced; paraphrased and quoted materials must have accompanying citataions.