RE: RE: RE: Just broke $2History of grades forecast.
Dec 1, 2010
Tony Makuch, President and CEO of Lake Shore Gold, commented: "We had avery good month in November.
The Bell Creek Mill achieved recoveries ofabout 97% with grades averaging around 7.00 gpt. Combined with the 5,107ounces we produced during the last two weeks of October, the results inNovember clearly demonstrate that the Bell Creek Mill is operatingextremely well and that we are positioned to exit 2010 with productionat the mill meeting and possibly exceeding our target of 10,000 ouncesper month. At Timmins Mine, we are making very good progress and remainon track for commercial production."
src:
https://cnrp.marketwire.com/client/lake_shore_gold/n/release.jsp?actionFor=1361908&releaseSeq=1&year=2010
TORONTO, ONTARIO--(Marketwire - May 3, 2011) -
-
Gold poured related to Mill production totaled 25,900 ounces, total sales for the quarter were 34,000 ounces at average gold price of US$1,387 per ounce
-
Ore processed in the quarter amounted to 148,400 tonnes at a grade of 4.89 grams per tonne at a recovery rate of 95.8% for recovered gold of 22,300 ounces
-
Daily throughput at Bell Creek Mill averaged 1,650 tonnes per day, throughput expected to reach 2,000 tonne per day target level on sustained basis before end of second quarter
-
First quarter average grade in line with expectations, reflects mine sequencing at Timmins Mine, with mining during quarter focused on lower grade portions of orebody
-
Company targeting 125,000 ounces of gold production in 2011, with production rates to increase as average mill throughput improves and mining resumes in higher-grade Ultramafic Zone at Timmins Mine before end of second quarter
-
First quarter cash operating costs expected to be in line with 2011 target level for Timmins Mine of US$575 per ounce
-
Lake Shore Gold Annual General and Special Meeting to be held on Wednesday, May 4, 2011, at 4:30pm at TMX Broadcast Centre, 130 King Street West, Toronto, Ontario, webcast available at www.lsgold.com. First quarter 2011 financial results to be released May 25, 2011.
src:
https://cnrp.marketwire.com/client/lake_shore_gold/n/release.jsp?actionFor=1436773&releaseSeq=5&year=2011
ORONTO, ONTARIO--(Marketwire - July 19, 2011) -Lake Shore Gold Corp. (TSX:LSG)("Lake Shore Gold" or the "Company") today reported production resultsfor the second quarter and first six months of 2011.
For the second quarter of2011, gold sales totaled 18,988 ounces while gold poured was 17,421ounces. A total of 162,974 tonnes at an average grade of 3.55 grams pertonne were processed for 17,615 ounces of recovered gold. During thefirst six months of 2011, gold sales totaled 52,942 ounces while 43,321ounces of gold were poured. A total of 311,374 tonnes at an averagegrade of 4.16 grams per tonne were processed for 39,942 ounces ofrecovered gold.
Mill throughput averaged1,790 tonnes per day during the second quarter and in the month of Juneaveraged 1,950 tonnes per day. During the first six months of 2011 millthroughput averaged 1,720 tonnes per day.
|
Three Months
Ended June 30, 2011 |
Six Months
Ended June 30, 2011 |
Gold Sales
Timmins Mine
Bell Creek
Thunder Creek
Total Gold Sales |
8,778
5,797
4,413
---------
18,988 |
35,371
13,158
4,413
---------
52,942 |
Gold Poured |
17,421 |
43,321 |
Gold Recovered
Timmins Mine
Bell Creek
Thunder Creek
Total Gold Recovered |
9,627
5,666
2,323
---------
17,615 |
20,578
14,301
5,064
---------
39,942 |
Grade
Timmins Mine
Bell Creek
Thunder creek
Average Grade |
3.36
3.60
3.82
--------
3.55 |
3.92
4.72
3.78
--------
4.16 |
Mill Throughput |
162,974 |
311,358 |
Tonnes Per Day |
1,790 |
1,720 |
Tony Makuch, President and CEO ofLake Shore Gold, commented, "Production in the second quarter of 2011was lower than expected mainly due to a change in mining sequence in thehigher grade UM1 Zone of the Timmins Mine caused by development andbackfill delays, which caused the advancement of lower grade sourcesearlier than anticipated. This resulted in an overall head grade in thequarter of 60% of plan. The change in mine sequence shifted plannedmining in the UM1 Zone initially to near the end of the second quarterand then into the second half of the year, with mining now planned toresume in July.
Grades during the second quarter of 2011 were also adverselyaffected by the milling of low-grade stockpiles from Bell Creek Mine,which had been accumulated as part of the advanced exploration programat the project.
Mining costs will bereleased with our financial results on August 9, 2011. We expect thatcash operating costs for the second quarter 2011 will be significantlyhigher than in the first quarter given lower grades and productionlevels as well as the completion of considerable development and sillingwork for mining in the UM1 Zone."
Second Half 2011 Production Outlook
"We recently completed adetailed production re-forecast for the full year 2011. For the secondhalf of the year, we expect that both our mining and processing rateswill improve. However, we also have lowered our estimates for headgrades as a result of less mining in the higher grade UM1 Zone thanplanned and a broader distribution of mineralization resulting in largerstopes and lower mining grades in other zones planned in 2011.
As we continue to build ourunderstanding of the Timmins Mine orebody, we are recognizing that someof the mineralized zones are broader than previously understood. Thiswill affect our average grades in 2011 as we mine more tonnes at lowergrades, but in the longer term it may result in more overall ounces,although further work is required to confirm this.
In the re-forecast, we havedeferred 130,000 tonnes of ore we had previously planned to mine fromthe UM1 Zone in 2011 until early 2012. This resulted from a change tostope planning and design to allow more time for additional development,to reduce backfill cycles, improve ground control and to minimizedilution.
As a result of lower headgrades planned for the remainder of the year, reflecting mine sequencingand broader mineralized zones, we are revising our target productionlevels for the year, and now expect to pour 85,000 to 100,000 ounces of gold in 2011, down from our previous estimate of 125,000 ounces.
====================================================
So it seems they hit a low grade area--I'm not a geologist--but wouldn't this cast some concern on LSG 3d model to be off by 60% in the head grade like this? You would assume they'd drill enough holes to be more accurate in their modelling.
Any mining expert want to chime in?