Sovereign Metals (ASX:SVM) said it has almost completed a second year of rehabilitation trials, as part of the pilot mining, backfilling, and rehabilitation program, at the Kasiya rutile-graphite project in Malawi, according to a Thursday Australian bourse filing.

Empirical data from the trials were used to prepare the mine closure and mine rehabilitation plans, which have been integrated into the mining, backfilling, and post-mining closure planning.

The rehabilitation program also contributed to community development works.