 Silvercorp Metals Inc TSE:SVM NYSEAMERICAN:SVM FRA:S9Y said it has increased the mining potential at its flagship Ying project, revealing that it has been granted three new exploration permits. The China-focused metals producer said the new permits cover 48.8 square kilometers sq km and cover the depth extensions of three mining permits, namely SGX, HPG, and TLP-LME-LMW. 