March 22 (Reuters) - Sierra Metals Inc:
* SIERRA METALS REPORTS FOURTH QUARTER AND YEAR-END 2017 FINANCIAL RESULTS
* QTRLY ZINC EQUIVALENT POUNDS PRODUCED 47.29 MILLION VERSUS 51.23 MILLION LAST YR
* QTRLY COPPER EQUIVALENT POUNDS PRODUCED 21.86 MILLION VERSUS 24.97 MILLION LAST YR Source text for Eikon: Further company coverage: