Mr. David Wolfin reports
AVINO APRIL PRODUCTION REPORT
Avino Silver & Gold Mines Ltd. has released its April, 2013, production results from the San Gonzalo mine and historic Avino mine surface stockpiles operations located on the Avino property near Durango, Mexico.
TOTAL APRIL PRODUCTION
Total
Total Total Total
silver gold AgEq
produ- produ- produ-
Days Total Feed Feed Recov- Recov- ced ced ced
of mill grade grade ery ery (oz) (oz) (oz)
opera- feed silver gold silver gold calcu- calcu- calcu-
tion (t) (g/t) (g/t) (%) (%) lated lated lated
San
Gonzalo
mine
(circuit
1) 29 6,460 274 1.36 81 73 45,899 206 57,235
Historic
above-
ground
stock-
piles
(circuit
2) 19 4,040 73 0.792 67 55 6,373 57 9,484
Total 10,500 52,272 263 66,719
Silver-equivalent for April was calculated using a 55-to-1 ratio for
silver to gold. Mill production figures have not been reconciled and are
subject to adjustment with concentrate sales. Calculated figures may not
add up due to rounding.
San Gonzalo production
Production numbers from April and the first quarter at San Gonzalo, as well as 2013 yearly totals are shown in the table.
SAN GONZALO PRODUCTION
January, Februry, March, April, YTD
2013 2013 2013 2013
Total mill feed (dry
tonnes) 6,392 6,418 6,913 6,460 26,183
Average daily
throughput (tpd) 228 229 230 223 227.5
Days of operation 28 28 30 29 115
Feed grade silver (g/t) 315 306 307 274 300.5
Feed grade gold (g/t) 1.27 1.19 1.4 1.36 1.305
Bulk concentrate (dry
tonnes) 197 166 206 202 771
Bulk concentrate grade
Silver (kg/t) 8.32 9.43 8.52 7.07 8.335
Bulk concentrate grade
Gold (g/t) 29.1 30.4 34.5 31.7 31.425
Recovery silver (%) 81 80 83 81 81.25
Recovery gold (%) 70 66 73 73 70.5
Mill availability (%) 91.1 99 96.7 96.1 95.725
Total silver
produced (kg) 1,638 1,565 1,758 1,428 6,389
Total gold produced (g) 5,722 5,036 7,117 6,411 24,286
Total silver produced
(oz) calculated 52,779 50,315 56,513 45,899 205,506
Total gold produced (oz)
calculated 184 162 229 206 781
Total silver-equivalent
produced (oz) 62,781 59,228 69,098 57,235 248,342
Silver-equivalent was calculated using a 55-to-1 ratio for silver to
gold. Mill production figures have not been reconciled and are
subject to adjustment with concentrate sales. Year-to-date and
calculated figures may not add up due to rounding.
San Gonzalo April highlights
- Total silver-equivalent ounces for April decreased by 17.2 per cent from March
due to lower tonnage processed and lower silver feed grade.
- The lower tonnage processed was due to one fewer operating days.
- Lower silver feed grade was due to more development material processed.
- Silver and gold recoveries were similar to March.
- Production in May will contain more material from the stopes and less
development material.
Circuit 2 production (historic above-ground stockpiles)
On April 11, 2013, Avino commissioned an additional 250-tonne-per-day circuit at its processing plant known as circuit 2. The circuit is currently being used to process historic above-ground stockpiles left from past mining of the Avino vein (for more information see news release dated April 29, 2013).
Prior to the San Gonzalo mine commencing production at the beginning of fourth quarter 2012, mill circuit 1 was used to process material from the same stockpiles. During the third quarter, circuit 1 produced 50,074 ounces of silver-equivalent, Avino expects output to be similar from circuit 2. Select production data from the third quarter and April, 2013, are presented in the table.
CIRCUIT 2 PRODUCTION
July, August, September, April,
2012 2012 2012 2013
Total mill feed (dry tonnes) 6,052 6,528 7,435 4,040
Days of operation 29.5 30 30 19
Feed grade silver (g/t) 71.74 77.37 71.74 73.00
Feed grade gold (g/t) 1.36 1.06 0.86 0.791
Bulk concentrate (dry tonnes) 84.90 115.44 123.62 49.84
Bulk concentrate grade
silver (kg/t) 2.991 3.015 2.983 3.977
Bulk concentrate grade gold (g/t) 49.47 33.79 30.85 35.30
Recovery silver (%) 58.50 68.90 67.70 67.00
Recovery gold (%) 51.00 56.40 58.50 55.00
Mill availability (%) 95 97 97 63
Total silver produced (oz)
calculated 8,164 11,189 11,671 6,373
Total gold produced (oz)
calculated 135 125 121 57
Total AgEq produced (oz)
calculated 14,914 17,439 17,721 9,484
Silver-equivalent for July through September was calculated using a 50-to-1
ratio for silver to gold, for the month of April a 55-to-1 ratio was used.
(The ratio was changed to reflect more current gold and silver prices.)
Mill production figures have not been reconciled and are subject to
adjustment with concentrate sales.
Circuit 2 April highlights
-
Feed grades in April from the historic stockpiles are similar to those
of September, 2012, when processing of this material ceased.
- Recoveries for silver and gold are similar but the concentrate grades
are better.
Quality assurance/quality control
Mill assays are performed at the lab on-site at the mine. Check samples are verified by SGS laboratory Services in Durango, Mexico. Concentrate shipments are assayed at AH Knight in Manzanillo, Mexico.
Qualified person(s)
Avino's projects are under the supervision of Chris Sampson, PEng, BSc, ARSM Avino consultant, and Jasman Yee, PEng, Avino director, who are both qualified persons within the context of National Instrument 43-101. Both have reviewed and approved the technical data in this news release.
We seek Safe Harbor.
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