C1 cash cost was positively impacted by the cost associated with stripping in excess of the average life of mine strip
This LBM, which is subject to challenges by certain environmental activist groups, is expected to add approximately 14 million tons of 8800 Btu coal at below-average mine strip
- Production is estimated to commence in 2015 with modelled output of 100,000-160,000 ounces of gold per annum and 700,000 - 1,100,000 ounces silver, with an average life of mine strip
ratio of 3.8.
Since 1963, Navajo Mine strip
mine operations have provided coal to the Four Comers Steam Plant, which resulted in the loss of Stanton's type localities and other Bauer fossils.
"With the IMS, we can locate drills, water trucks, and other vehicles over the entire 64 km mine strip
on a computer back in the office," said BMA surveyor Brad Payne.
The average life of mine strip
ratio is 7.6 bcm waste per tonne of ROM coal including pre strip.
It will also enable high volume bulk mining methods to be employed, thereby significantly reducing unit mining costs and delivering an estimated mine strip
ratio of less than 1:1.
The Trilogy pit will be in operation for four years and has a life of mine strip
ratio 4.9:1 (waste tonnes to ore tonnes).
* Life of mine strip
ratio reduced to 1.15:1 from a previously anticipated 1.26:1.
With a life of mine strip
ratio estimated to be just 2:1, the mountain was promising it would reward the company with another 17 years' worth of production.