Mining Method

Question 1

Draw King

Answer 1

Draw is King refers to the significant importance of draw control and also controls the production in sublevel and block caving. How you draw the ore from the drawpoints impacts on:

Question 2

What does Draw King it impact on

Answer 2

• Recovey
• Dilution
• Safety: Airblast/hangups
• Potential damage to draw point, access points and draw horizons

Question 3

Draw King design factors

Answer 3

• Blast fragmentation
• Available equipment
• Draw point spacing
• Draw limits
• Extraction level damage
• Crush and infrastructure not available
• Amount of displace in the approach to production

Question 4

manage draw control

Answer 4

• All draw points drawn evenly
• Open area should be big enough to achieve production tonnage
• Must have 30-15% extra draw points
• Simple draw strategies-fewer draw points, flat draw planes are better
• Different geotechnical access for draw rates

Question 5

draw control

Answer 5

practice of controlling the tonnage drawn from individual draw points