OREBODY DELINEATION

1
OREBODY DELINEATION
MMPE 290
2
(No Transcript)
3
Types of Drilling for Sampling

• Rotary
• Diamond Core Drilling (depths gt100m)
• Auger
• Tri-Cone Roller Bit
• Percussive
• can use reverse circulation
• ITH
• Tophammer
• (Coring more expensive, slower but deeper with
  less deviation higher recovery)

4
(No Transcript)
5
(No Transcript)
6
(No Transcript)
7
DIAMOND DRILL
8
DIAMOND DRILL CORE HOLE DIAMETERS EX 22.2mm
38.1mm AX 29.4mm 47.6mm BX 41.3mm
60.3mm NX 54.0mm 76.2mm ( Q indicates wireline
system) ( T indicates thin wall rods)
9
SURFACE SET DIAMOND DRILL CORE BIT AND REAMING
SHELL
10
(No Transcript)
11
Senior Mining Company Exploration Expenditures -
1997
Total 817.7M
12
Junior Mining Company Exploration Expenditures -
1997
Total 262.2M
13
Role of Exploration

• Each tonne of ore mined must be replaced with
  another to continue business.
• The alternative to exploration is acquisition of
  mining properties.
• Exploration has a high failure rate, but this
  should not affect a diversified mining company.
• Exploration costs are tax-deductible (analogy to
  RD in manufacturing).

14
Diamonds in Canada?
Diamonds are formed at high pressure deep in the
earth and transported to surface in kimberlite
pipes Other minerals also formed if pressures
high enough - indicator minerals Indicator
minerals are mobile and easily transported by
erosion.
15
An eroded kimberlite pipe
16
(No Transcript)
17
The Ekati Mine