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Production & Operating Statistics

The Topia silver-gold-lead-zinc mines are small, narrow-vein, underground operations utilizing a modified cut-and-fill mining method known as resuing. The ore is processed to produce separate high quality, precious metal-rich, lead and zinc concentrates. The concentrates are transported to the Pacific port of Manzanillo, Mexico, where they are sold to commodity traders. From Manzanillo, the concentrates are shipped to smelters worldwide for the extraction and refining of metals. Gold, silver and lead are recovered from the lead concentrate while zinc plus a small quantity of silver are recovered from the zinc concentrate.


TOPIA

2013

2014

2015

2016

Q1 2017

Tonnes Ore Milled (000's)

62

67

65

56

0.2

Ore Silver Grade (g/t)

351

343

356

354

255

Plant Silver Recovery (%)

90.2

89.9

90.7

90.4

87.6

Metal Production, (000's) (Ag Eq oz)x

857

994

1,078

899

2.814

Silver Production, (000's) (oz)

631

668

678

574

1.440

Gold Production (oz)

651

555

614

612

1

Lead Production (tonnes)

1,116

1,154

1,198

1,034

3

Zinc Production (tonnes)

1,673

1,154

1,850

1.496

6

Cash Cost / Ag oz (US$)xx

18.65

15.81

12.19

11.43

nm1

1Milling operations at Topia were suspended for the duration of the first quarter of 2017. Tonnes milled and metal produced were incidental to the testing of plant upgrades. As a result, the Company considers its usual non-IFRS disclosures for the Topia Mine, such as cost per tonne milled, cash cost, cash cost per Ag eq oz, AISC and ASIC per Ag eq oz, to be not meaningful (“nm”).

x Metal Production is expressed in terms of silver equivalent ounces, (Ag Eq oz), the formula for which depends on the gold, silver, lead and zinc metal prices used in each year and hence are only indicative.

xx Cash cost per ounce of silver is a non-IFRS measure used by the Company to manage and evaluate operating performance at each of the Company's mines. It comprises the cost of production, cost of concentrate transportation and the cost of smelter and refining charges, net of the credit from the sale of by-product metals, (gold, lead and zinc). Refer to the "Non-IFRS Measures" section in our MD&A

Mining

Operations consist of multiple small, narrow-vein mining operations, with as many as 11 different veins. The mines are typically accessed by unpaved mountain roads leading to adits which either follow the vein into the mountain or are driven to cross-cut the vein. The veins range from 15 to 150 cm wide, with an average of 30 cm. The mining method is known as resuing, a labour-intensive, modified cut-and-fill system, where the waste-rock fill is mined from the adjacent wall rocks. Broken ore is hauled by 8-tonne truck up the mountain roads to the processing plant. The main access to the Argentina mine and vein is located near the processing plant and is equipped with a bored shaft. In the future, it is planned to utilize this shaft to hoist ore.

The processing plant consists of a 2-stage crushing section, producing a (3/4 in.) fine ore mill feed; a grinding section, consisting of three ball mills, one larger unit with two smaller spares, and two conventional flotation circuits producing a silver-rich lead concentrate plus a zinc concentrate. The plant capacity is approximately 270 tonnes per day. 

1.55 +0.04 +2.65% Volume: 74,829 June 23, 2017
1.16 +0.02 +1.75% Volume: 893,415 June 23, 2017
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