Trevali to Be Added to S&P/TSX Global Mining Index and S&P/TSX SmallCap Index

VANCOUVER, BRITISH COLUMBIA--(Marketwired - Sept. 15, 2014) - Trevali Mining Corporation ("Trevali" or the "Company") (TSX:TV)(OTCQX:TREVF)(LMA:TV)(FRANKFURT:4TI) will be added to the S&P/TSX Global Mining Index (including its subsets, the S&P/TSX Global Base Metals and Equal Weight Global Base Metals Indices) and to the S&P/TSX SmallCap Index effective after the close of trading on Friday, Sept. 19, 2014.

"Trevali has experienced significant growth over the past few years, graduating from explorer to developer to the only primary zinc producer on the TSX," stated Dr. Mark Cruise, Trevali's President and CEO. "We are proud of our inclusion in these S&P/TSX Indices as recognition of both our accomplishments and creation of shareholder value. Our addition to these indices should increase Trevali's exposure to a broader range of both institutional and retail shareholders."

About S&P/TSX Global Mining Index:

The S&P/TSX Global Mining Index is an investable index that provides investors with a broadly representative benchmark for global mining portfolios and a basis for innovative, index-linked investment vehicles.

About S&P/TSX Global Base Metals Index:

The S&P/TSX Global Base Metals Index is designed to provide investors an investable index of global securities involved in the production or extraction of base metals. The index is a subset of the S&P/TSX Global Mining Index, an investable index that provides investors with a broadly representative benchmark for global mining portfolios and a basis for innovative, index-linked investment vehicles.

About S&P/TSX Equal Weight Global Base Metals Index:

The S&P/TSX Equal Weight Global Base Metals Index is the equal weighted version of the S&P/TSX Global Base Metals Index, a benchmark of securities involved in the production or extraction of base metals, and a subset of the S&P/TSX Global Mining Index.

About S&P/TSX SmallCap Index:

The S&P/TSX SmallCap Index was created to address the needs of investment managers requiring a portfolio index of the small cap market segment of the Canadian equity market. The S&P/TSX SmallCap Index serves the dual purpose of a benchmark as well as an investable index. The index offers the broad representation of benchmark indices while maintaining the liquidity characteristics of narrower indices.