Have you checked the official website for Alaska for any tourist info along those lines? Maybe email the state Chamber of Commerce and ask them.
Alaska doesn't have a large industrial complex, so anything that can legally attract tourists is fully supported by state officials. That's why there's a state law requiring out-of-state folks interested in hunting and fishing for game animals must use state licensed guides for their forays. State citizens are not required to do that. At least when I lived there 30 years ago.
Hey John ....... check this place out.
I'm taking my lady up there this spring ..... Emailed them about their 'digs' (dredge size limits) ..... they replied back to bring my wheeler (ATV) because the 'virgin grounds' they will be opening .... are 2.5 miles away, from the campgrounds. I'm not much into 'pay to mine' outfits (I do mostly BLM) ..... but the facilities they offer are 'outstanding' (for the $$) ..... as I'm a disabled 'veteran' and my lady is a nurse ... I'll have my 'six' covered.