factors which affect location of a shaft

[phalantwa]

how does the following factors affect the location of a mine shaft:
1.topography of an area
2.grade of an ore body
3.tonnage
4.minimum footage
5.gas and drainage
6.environmental acceptance

 

[rkdoc]

The short answer is "in many ways". Check out the following reference/course books for a bit more detail:
+ Introductory Mining Engineering, by Hartman & Mutmansky (1st and 2nd editions)
+ SME Mining Engineering Handbook, edited by Hartman
+ Underground Mining Methods, edited by Bullock & Hustrulid (1st and 2nd editions)