cockatoo coals contract could bea$50m annually, page-2

From COK website:

COK is doing a good job maintaining production levels at rate
consistent with their short term target of over 420ktpa, and
ultimately 720ktpa. Pleasingly, unit costs, on our rough calculation
from the Cashflow report, look to be declining compared to the last
quarter and are at about A$125/t. Costs were an area that we
highlighted as concern last quarter and through higher production
rates, much better definition of the seams, and a new (cheaper)
mining contractor we feel confident that costs at Baralaba will come
down to around A$90/t over the next 12-24 months. The new
contractor is Huddy Mining, a subsidiary of Industrea (IDL), and is
expected to save COK about 25% on mining rates