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Alexco Environmental Group

Resource Table

Summary of Resources

The following table sets forth the estimated resources for Alexco’s mineral properties within the Keno Hill Silver District:

Category1,2,9

Property

  

Tonnes

Ag
(g/t)

Au
(g/t)

Pb
(%)

Zn
(%)

Contained
Ag (oz)

            

Indicated

Bellekeno Deposit3&4

  

262,000

585

n/a

3.5%

5.3%

4,927,000

   

Lucky Queen Deposit3&5

132,300

1,167

0.2

2.4%

1.6%

4,964,000

 

 

 

Flame & Moth Deposit3&5

1,679,000

498

0.4

1.9%

5.3%

26,883,000

   

Onek3&5

  

700,200

191

0.6

1.2%

11.9%

4,300,000

   

Bermingham3&6

  

1,651,500

628

0.1

1.6%

1.3%

33,350,300

   

Total Indicated – Sub-Surface

4,425,000

523

0.3

1.8%

4.7%

74,424,300

   

Elsa Tailings7

 

2,490,000

119

0.1

1.0%

0.7%

9,527,000

   

Total Indicated – All Deposits

6,915,000

378

0.2

1.5%

3.3%

83,952,300

            

Inferred

Bellekeno Deposit3&4

  

243,000

428

n/a

4.1%

5.1%

3,344,000

   

Lucky Queen Deposit3&5

 

257,900

473

0.1

1.0%

0.8%

3,922,000

 

 

 

Flame & Moth Deposit3&5

 

365,200

356

0.3

0.5%

4.3%

4,180,000

   

Onek3&5

  

285,100

118

0.4

1.2%

8.3%

1,082,000

   

Bermingham3&6

  

616,550

526

0.1

1.1%

0.9%

10,438,700

   

Total Inferred

  

1,767,750

404

0.2

1.4%

3.4%

22,966,700

 

 

 

 

 

 

 

 

 

 

 

 

Historical

Silver King8

 

 

 

 

 

 

 

 

 

Resources

   - Proven, probable and indicated

99,000

1,354

n/a

1.6%

0.1%

4,310,000

 

 

   - Inferred

22,500

1,456

n/a

0.1%

n/a

1,057,000

Notes:

Notes:

  1. All mineral resources are classified following the CIM Definition Standards for Mineral Resources and Mineral Reserves (May 2014), in accordance with the CIM Estimation of Mineral Resources and Mineral Reserves Best Practice Guidelines and the guidelines of NI 43-101.
  2. Mineral resources are not mineral reserves and do not have demonstrated economic viability.  All numbers have been rounded to reflect the relative accuracy of the estimates.
  3. The Keno Hill Silver District is comprised of five deposits:  Bellekeno, Lucky Queen and Flame & Moth, Onek and Bermingham, of which Bellekeno, Lucky Queen, Flame & Moth and Bermingham are incorporated into the current mine plan outlined in the technical report filed on SEDAR dated March 29, 2017, entitled “Preliminary Economic Assessment of the Keno Hill Silver District Project, Yukon, Canada”. The mineral resource estimates for the project are supported by disclosure in the news release dated March 29, 2017 entitled “Alexco and Silver Wheaton Amend Silver Purchase Agreement and Alexco Announces Positive Preliminary Economic Assessment for Expanded Silver Production at Keno Hill”. The mineral resource estimate for Bermingham has been updated by disclosure in note 6 below.
  4. The resource estimates for the Bellekeno deposit are based on a geologic resource estimate having an effective date of September 30, 2012. The Bellekeno indicated mineral resources are as at September 30, 2013, and reflect the geologic resource less estimated subsequent depletion from mine production.
  5. The resource estimates for the Lucky Queen, Flame & Moth, Onek and Bermingham deposits have an effective date of January 3, 2017.
  6. The resource estimates for the Bermingham deposit has an effective date of September 17, 2018 and is supported by disclosure in the news release dated September 20, 2018 entitled “Alexco Updates Bermingham Mineral Resource”.
  7. The resource estimate for the Elsa Tailings has an effective date of April 22, 2010, and is supported by the technical report dated June 16, 2010 entitled “Mineral Resource Estimation, Elsa Tailings Project, Yukon, Canada”.
  8. Historical resources for Silver King are supported by disclosure in the news release dated March 29, 2017 entitled “Alexco and Silver Wheaton Amend Silver Purchase Agreement and Alexco Announces Positive Preliminary Economic Assessment for Expanded Silver Production at Keno Hill”.
  9. The disclosure regarding the summary of estimated resources for Alexco’s mineral properties within the Keno Hill District has been reviewed and approved by Neil Chambers, P.Eng., Mine Superintendent and a Qualified Person as defined by NI 43-101.
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