could we get a button that removes a material from the designation or a black list designation.

for example i was trying to mine some lime stone along a shore line where i had already been dumping everything trying to expand but it picked up the waste and slag that i wanted to leave behind? or is it because its detected limestone beyound that part?

It sounds like you’re talking about an ”exclusion filter”, being able to set one or two materials that should be avoided in the designation?