Ahhh... it was hacked. I had just asked the same question about another tweet saying Don passed away and the tweet was deleted.
Don's tweets may be fake, but here is a clip of Joe Biden actually using the N-word https://www.c-span.org/video/?c4936796/user-clip-biden-reading-word
This is the link for reference: https://twitter.com/DonaldJTrumpJr/status/1704471798622921153
salt mining
by
https://www.insidehighered.com/quicktakes/2016/10/31/wikileaks-bill-clinton-and-profits