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Create slope and generate contours for pit face

Question asked by nealacg on Jan 27, 2011
Latest reply on Jan 28, 2011 by geonetadmin
I am working on the post development plans for a quarry.  The pit will be mined out to an elevation of 98m.  I need to create a slope of 30 degrees from the edge of the quarry boundary (to the pit floor elevation of 98m).  Then, within this sloped area, I need to generate contours.

I have attached an image of an old plan that shows what I am trying to accomplish (AE_Post_CP.jpg) and an image of the new contours I am working with.  The new contours came from survey points that are much more accurate then the contours on the old plan. 

The second image  (post_working.jpg) shows the old sloped area, quarry boundary and new contours.  Any suggestions for creating the new 30 degree sloped area and contours within this area would be greatly appreciated!

I am working in 9.3.1 and have all extensions.