Notes on McWaters 43-101
posted on
May 18, 2008 05:36AM
Producing Mines and "state-of-the-art" Mill
The McWatters mine is planned to produce 106,988 tonnes in 2008, 422,305
tonnes in 2009 and 67,505 tonnes in 2010. A detailed ore production schedule
is tabulated in Table 25.2.The nickel price used for the McWatters project was
$12.50 US. For the purpose of this study $1CDN:$0.98US was assumed and
remains constant for the life of mine. Table 1-2 shows the estimated pre-tax
cash flow for the McWatters projectLiberty Mines Inc
Table 1-2 Summary of the financial analyses at McWattersTonnes of ore produced 596,797
Tonnes of Ni sold (mill recovered) 5232.15
Total Revenue $107,165,695
Operating Costs
Mining Cost $21,875,842
Surface Transportation $2,088,793
Closure $1,640,600
Consulting $60,000
Milling Cost $8,653,570
G & A $2,564,049
Net Operating Profit $78,282,841
Capital Costs $16,354,592
Pre Tax Cash Flow $53,928,248
Internal Rate of Return (IRR) 385%
Net Present Value (NPV) at 5% discount rate $46,121,200
An indicated mineral resource estimate of 714,870 tonnes grading an average
0.93% Ni (calculated based on a 0.5% Ni cut-off grade) was indentified. The
resultant block model was used by SRK engineers to formulate a viable mine
plan and schedule that incorporates methodology and rates appropriate to the
deposit size, geometry, and geographic location.
The McWatters ore body consists of a sub-vertical, larger zone of disseminated
nickel sulphides over-lying a sub-horizontal massive sulphide basal layer. The
two zones present distinct sizes and geometry and are, therefore, conducive to
two distinct underground mining techniques: longhole stope mining and
conventional panel stope mining. The former of the two methods is scheduled
to produce 83% of the ore, and is therefore the most important mining method
to be employed. Stopes are to be accessed via an underground ramp from
surface. This same ramp will also serve as a haulage route utilized to
transport ore to surface using underground haulage trucks. Ore is then
transported by a series of all weather gravel roads to Liberty’s operating
Redstone processing plant 9 kilometers away.
Based on a 0.6% cut-off grade a probable mineral reserve of 596,800 tonnes at
an average grade of 0.93% Ni was identified. Where appropriate, selective
portions of the deposit are mined at a reduced 0.5% cut-off grade. The
resultant financial analysis was positive, and indicated a pre-tax cash flow of
$53,930,000, based on $12.5 per pound of nickel. Financial results are
positive down to a break-even price of $5.50 per pound of nickel. Based on
current and predicted market conditions, and given the relatively short 2 year
life of mine, the results are considered highly positive.