OREANDA-NEWS. May 18, 2012. The Russian State Commission on Mineral Reserves (GKZ) approved the results of a supplementary exploration carried out by North-Western Phosphorous Company in 2008–2011 at the Oleniy Ruchey deposit. Total reserves of apatite and nepheline ores (B+C1+C2) increased 5% as a result of the revaluation. The most significant upward revision was recorded in the open pit operations, where ore reserves were increased 75%. That will considerably extend the life of the open pit (the first stage of the Oleniy Ruchey mine), which now can be developed for at least 14 years.

Open pit mining

Ore, ‘000 t

P2O5, %

P2O5, ‘000 t

B

7,369

18.16%

1,339

C1

22,566

13.36%

3,014

B+C1

29,935

14.54%

4,353

C2

1,063

14.12%

150

B+C1+C2

30,998

14.53%

4,503

 

 

 

 

Underground mining

Ore, ‘000 t

P2O5, %

P2O5, ‘000 t

B

60,733

16.89%

10,257

C1

182,632

16.23%

29,642

B+C1

243,365

16.39%

39,899

C2

129,163

14.95%

19,307

B+C1+C2

372,528

15.89%

59,206

 

 

 

 

Total

Ore, ‘000 t

P2O5, %

P2O5, ‘000 t

B

68,102

17.03%

11,596

C1

205,198

15.91%

32,656

B+C1

273,300

16.19%

44,252

C2

130,226

14.94%

19,457

B+C1+C2

403,526

15.79%

63,709