1. In your own words, give a brief summary of the TOC concept [5] 2. Explain how you will apply the concept of buffers in the mining process [10] 3. What is the aim of a free face in blasting? [5] 4. You are called in by your boss and informed that there is a problem with one of the blast blocks in the pit. You have to go and inspect the blast and report your findings back. Explain what you will look for and comment on each observation. [12] 5. Describe what is meant by the double backup method of loading and explain why it so popular? Also briefly mention the other methods and their advantages / disadvantages [10] 6. Briefly describe in your own words the economic interaction between the different sub-processes in mining operations and explain what you will do to ensure the optimum economic choice. [10] 7. Why would a mine make use of a mining contractor?[10] 8. What are the blasting and environmental issues that could result from incorrect drilling and charging? [7] 9. What are the advantages and drawbacks of ANFO? [8] 10. In the article - Improvement in the overall efficiency of mining equipment: a case study - what was the "largest benefit" noted by the author? And comment on the article - Tip, summarise the conclusions [15]