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33
12. How is core drilling made? Where and when was the core drilling first
used?
13. Why are the rock drillability and blastability very important for drilling
pattern design? What is the main aim when designing a drilling pattern?
14. Where from can water flow into the underground mine? How do
ground waters move down to the water basin? What is sump?
15. Why is ventilation of mine so important? What is air in mine regularly
contaminated by? What are the main components of mine ventilation system?
16. What is the main idea of rock bolting? When is the rock bolting usually
done? What categories of bolts do you know?
17. Since when has mechanized bolting been available?
18. What does mechanized equipment now handle? What equipment pro-
vided now secures fixing and grouting? What advantages does LHD technology
give?
19. Why is developing of mine another 400 meters down difficult? Why
can we say, that the ramp constitutes for shaft?
20. What are the disadvantages (недостатки) of carrying ore on trucks?
21. What variables of blasting can be altered and how? How have new
equipment and blasting materials changed the quality of blasting? What may be
limiting factors for blasting in remote areas?
22. What is explosive? What are the requirements to the explosives, used in
underground blasting? Why is drilling pattern for surface blasting not very com-
plicated?
23. What is the percentage of total production of the crushed stone by open
pit mining?
24. Under which circumstances is the mining operation usually con-
verted from open pit to underground mining? When is open-pit mining used?
25. What is reclamation of land? What sciences do operations of reclama-
tion depend on? What is water-based recreational area?
26. What is the height of the bench controlled by? How wide are operat-
ing benches?
27. What is called stripping ratio? Where can the yearly stripping ratio in
an operating mine be found? What is called incremental stripping ratio?
33
12. How is core drilling made? Where and when was the core drilling first
used?
13. Why are the rock drillability and blastability very important for drilling
pattern design? What is the main aim when designing a drilling pattern?
14. Where from can water flow into the underground mine? How do
ground waters move down to the water basin? What is sump?
15. Why is ventilation of mine so important? What is air in mine regularly
contaminated by? What are the main components of mine ventilation system?
16. What is the main idea of rock bolting? When is the rock bolting usually
done? What categories of bolts do you know?
17. Since when has mechanized bolting been available?
18. What does mechanized equipment now handle? What equipment pro-
vided now secures fixing and grouting? What advantages does LHD technology
give?
19. Why is developing of mine another 400 meters down difficult? Why
can we say, that the ramp constitutes for shaft?
20. What are the disadvantages (недостатки) of carrying ore on trucks?
21. What variables of blasting can be altered and how? How have new
equipment and blasting materials changed the quality of blasting? What may be
limiting factors for blasting in remote areas?
22. What is explosive? What are the requirements to the explosives, used in
underground blasting? Why is drilling pattern for surface blasting not very com-
plicated?
23. What is the percentage of total production of the crushed stone by open
pit mining?
24. Under which circumstances is the mining operation usually con-
verted from open pit to underground mining? When is open-pit mining used?
25. What is reclamation of land? What sciences do operations of reclama-
tion depend on? What is water-based recreational area?
26. What is the height of the bench controlled by? How wide are operat-
ing benches?
27. What is called stripping ratio? Where can the yearly stripping ratio in
an operating mine be found? What is called incremental stripping ratio?
