We recently had a sound transfer problem between two units with an adjacent wall we used mineral wool and a sheet of mass loaded vinyl;  it did the trick.

How to examine Land quality, soil/ mineral use, if land is in sink hole, liquefaction zone risk.- Could remote LAND realtor be trusted, as we do all above for already built house.d.

I’ve been to Sudbury before on mining projects and it was purely a Nickel mining town dominated by the big 2 miners

A true Solo 401(k) lets you invest in multiple categories such as precious minerals, metals, and real estate.

RE: ~33% (I have taken money out of RE otherwise this would be much higher)mineral rights: 10% (North Dakota: may have been a better investment than my average RE investment which means great)Stocks: ~55% (but ~50% of this value was obtained by profits from RE)Other including cash and bonds: ~2%RE investing has provided us a great ROI but so did the mineral rights which was acquired at a near perfect time and is still paying a substantial dividend(?). 

We both noticed early in the game that the timers on our two screens were different, with hers being about a minute or so ahead of mine. RED

Like-kind - means it must be real estate (but there are also things like oil interests and mineral rights and billboards with 30-year leases intact that are considered to be "like-kind" to real estate).Qualified use - means that it is held for investment use. 

This may not be significant for you, but here in Idaho you need to make sure you get mineral rights and water rights when you buy your land, as those can be sold or leased separately.

Need some professional advise:Have mineral rights that we're buying thru trust owned by a Roth IRA and do not want the vendor to issue a 1099, which is not required by law. 

Maybe some mineral interests to continue to complicate things, lol.