Subsurface Methods as Applied in Mining Geology 



987 



CROSS SECTION 



Reference Plane 



Reef at collar level 

 of main shaft. 



Contour Interval = lO' 

 ^Ore Body 



500' 



SCALE 



Figure 526. Sketch showing vein contours referred to an inclined plane. Ore bodies 

 localized at change of dip. (After Conolly, Economic Geology.) 



