Three of my favorite "mining" companies have stopped filing with the SEC (at least quarterlies and annuals):
Ireland (IRLD) - last filing was 11/14/17, now about 25 months delinquent
El Capitan (ECPN) - last filing was 3/30/18, now about 9 months delinquent
Searchlight (SRCH) - last filing was 11/14/16, now about 37 months delinquent
Given the recent improvement by the SEC in suspensions due to delinquencies, Ireland and Searchlight are on the chopping block. El Capitan has a while to go.
FYI, Ireland has claimed to have discovered a huge gold deposit in a dry lake bed, one of the last places geologically you would expect gold to be. El Capitan has found a huge platinum/gold/silver deposit in New Mexico, a state where little platinum has ever been found. Searchlight has been promoting a 20 million ton pile of smelter slag where Phelps Dodge inexplicably left behind 10 millions ounces of gold because "they were only interested in the copper".
Do your own research, use third-party sources, and don't buy into the hype.