Trident Royalties PLC (AIM:TRR) hailed its most significant quarter to date at the end of 2021 as the number of producing assets within the portfolio increased by 350%, with royalty payments "poised for substantial increase" this year. Adriatic Metals PLC (LSE:ADT1, ASX:ADT, OTCQX:ADMLF) said it is pleased with its achievements in the fourth quarter to 31 December 2021, which saw its flagship Vares Silver Project in Bosnia & Herzegovina securing funding through to production, expected to begin in the second quarter of 2023. Tharisa PLC (LSE:THS, JSE:THA) has signed an agreement for the development of a solar power plant to supply power to its Tharisa Mine in South Africa.