I'm also no expert but I noticed UNV's coal in the north block complex is of a lower quality to IEC's.
CV(MJ/kg) Measured 21,0 for UNV. IEC's = 26.5
Ash - 26,9 for UNV & 18.9 for IEC.
I notice UNV has 2 x coal mine for the record. If they are seeing huge growth, then it's not a far stretch to see that extend to Tanzania.
https://unauthorised investment advice/resources/universal-books-big-jump-in-profit-as-sentiment-fires-up-for-coal-stocks/