Healthy reserve base to provide earnings visibility HZL has a huge reserve base, which provides strong earnings visibility. During the year, gross additions of 5.4 million tonnes (MT) were made to reserve and resource (R&R;), prior to depletion of 13.8 MT. As on March 31, 2019, the combined R&R; were estimated to be 403 MT, containing 34.6 MT of zinc-lead metal and 965 million ounces of silver. HZL's overall mine life...