auto miner+cannon ball maker?

i need something that will go mine coal and iron then go smelt and after about a hundred bars or so it will go and make cannon balls do you think this is possible?

 

Everything is possible.
Make vars for bars, then if bars is 200 or w/e then smith c balls.

 

Where would you do this? I don't see this happening.

 

Same, only place I can think of is Al Kharid which would be really slow since theres only 3 coal rocks which are like always being used and then theres the walking distance..