What's wrong with NIMBY?

It's unlikely there's a good mining location just sitting there already zoned for mining that isn't being mined right now. I'm not sure why that would be the case, actually.
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Shopierehuh is correct -- this is the normal legal process allowing for public input. The residents get to have their say. A conditional use permit is a public benefit offered through the democratic process. There is no unlimited right to use of property regardless of the impact on the community -- that's why we have zoning in the first place. The community may be able to develop a compromise as far as truck traffic, sightlines, or later mitigation, so ultimately the process isn't necessarily either/or.

What are the chances for "Friends and Neighbors..." in a Wisconsin court when B.R. Amon and Sons is so heavily invested in Republican campaigns and has been investigated for questionable contributions in numerous campaigns in the past. Are these people some sort of dreamy-eyed liberals or maybe just concerned citizens?

It wasn't "zoned for mining" or they would not have to be seeking a conditional use permit. It is likely zoned A1. No, it is not owned by Anon and Sons, so no one is "preventing them from legally using their property."

The people who object to this permit are seeking to preserve the quiet rural lifestyle that they sought when they decided to live there. Some have lived in the area for generations. There are a multitude of environmental considerations that are of concern with this site, due to it's proximity to wildlife areas and watersheds.

Sand and gravel is not a rare commodity in Wisconsin. It can be found on other sites, also. This appears to me to be an example of a landowner and a company from a neighboring county attempting to make a ton of money at the expense of the people who live in the area. The residents need to voice their concerns on this issue.

This is the normal legal process that allows objections to be voiced and then a decision will be made whether to allow it or not.

The only question that matters is, was the property zoned for mining previously, or is the company looking for a re-zoning or exemption now? If it wasn’t properly zoned, then everyone in the area should have a chance to have their voice heard, and probably be compensated if the mine opens. If it was properly zoned, then why should the “Friends & Neighbors” be allowed to prevent Amon & Sons from legally using their property? Or maybe the group would like to instead compensate Amon for the lost revenue? Sounds like the folks who move in next to an airport and then complain about all the noisy airplanes.