23 April 2019

ASX Announcement

EXCEPTIONAL PRELIMINARY METALLURGICAL RESULTS FROM KILDARE ZINC PROJECT

Highlights:

Zinc Concentrate:

o96% recovery of Zn to concentrate.

o56% Zn in concentrate.

oMinimal Pb in Zn concentrate (<0.5%).

Lead Concentrate:

o86% recovery of Pb to concentrate.

o62% Pb in concentrate.

oMinimal Zn in Pb concentrate (<3%).

Minimal levels of deleterious elements in either concentrate.

Standard differential flotation process employed using a standard reagent scheme.

Low expected energy costs (BWI 10.2kWh/t) to achieve target grind size (P80 150µm).

Additional process refinements will be aimed at optimising metallurgical performance.

Results to be used as part of an ongoing assessment of project economics.

Zinc of Ireland NL (ASX: ZMI) (ZMI or Company) is pleased to announce that the preliminary metallurgical test work at the Kildare Project has yielded very positive results, demonstrating the potential for the project to produce high quality, marketable, zinc and lead concentrates (summarised in the tables below).

This preliminary round of testing was designed to support the ongoing assessment of the economic potential of the Kildare Project in conjunction with the other parallel resource and development studies taking place in 2019.