I am confused.

If I look at table 17-B (page 101) of McWatters Technical report they showthe following (Cost $/tonne of ore)

Development cost $17.73

Longwall mining mining $3.70

Equipment operating cost (Fuel, elecricity, supply) $11.83

Lierty labour cost $10.50

consulting work $0.10

Capital/equipment expenditures $9.97

Surface transportation(ore haulage to redstone plant) $3.50

Mobile equipment lease cost $5.26

Mill cost $14.50

Backfill $1.59

Closure/Water Treatment Env $3.71

Longhole drilling $2.52

G & A $4.30

Total estimated cost projection $89.21/tonne of ore

So the article says $12-$16 US per pound- How do you convert our figure of $89.21/tonne of ore to cost per pound?