1 The mine streched three miles into an ore bed.

2 The ore bed hosts in boracic granulite of Lieryu formation, Liaohe group of lower proterozoic.

3 There is rich palygorskite ore bed in west region in Guizhou province.

4 In this paper, the mineral technology characteristics of the ore in Changba ore bed and Lijiagou ore bed is introduced.

5 The IP anomaly tends to extend considerably at the northeast and southwest ends, which might reflect outward extension of the deep sulfide ore bed.

6 From the viewpoint of systems engineering the paper has studied the method and theory of the stepwise mining limit for the inclined ore bed with the help of operational research and computer.

7 Baitupo calcbentonite ore is mined easily owing to the stable, shallow buried ore bed with large thickness.

8 In Motuosarla Fe and Mn deposit, the chert mainly distributes in iron ore bed, some on its top and at its bottom, with a relatively stable thickness.

9 It is determined as per the mining condition of ore bed and recommended mining method.

10 Yaojia Formation in Qianjiadian depression has been found out to be the favorable target ore bed for looking for sandstone-type uranium deposit.

11 It is mainly suitable for exploration if metal or non-metal solid mineral ore bed.

12 The mineral composition, physicochemical property and geotechnical property of main ore bed is studied in this paper.

13 Based on the "surface mine long term planing model" the stepwise mining limit optimization model has been set up for inclined ore bed.