2nd Amend. to the Option and Joint Venture agrmnt



  
 Exhibit 10.21 
  
 SECOND AMENDMENT TO THE 
 OPTION AND JOINT VENTURE AGREEMENT 
 OF MARCH 15, 2001 
  
 It is hereby agreed this August 27, 2002
to amend the OPTION AND JOINT VENTURE AGREEMENT of March 15, 2001 (the “Agreement”), between MINERA ANDES INC., a corporation formed under the laws of Canada (“MAI”), MINERA ANDES S.A., a corporation formed under the laws of
Argentina (“MASA”), and MAURICIO HOCHSCHILD & CIA. LTDA., a corporation formed under the laws of Peru (“MHC”). 
  
 By mutual consent as witnessed by the signing of this document it is hereby agreed that the Agreement and the rights and obligations of the parties hereunder are strictly limited to the areas of interest described in Exhibit 1 of the
First Amendment to the Agreement of May 14, 2002 (being herein referred to as the “Area of Interest”). There is no area of influence around the Area of Interest. Each of the Participants shall have the free and unrestricted right to enter
into, conduct and benefit from any and all business ventures of any kind whatsoever, whether or not competitive with the activities undertaken pursuant hereto, without disclosing such activities to the other Participant or inviting or allowing the
other Participant to participate herein. Without limiting the generality of the foregoing, no Participant shall be under any duty to disclose to any other Participant information relating to mining or mineral claims, concessions, or leases of other
properties located outside the Area of Interest. 
  
 In addition, MHC agrees not to acquire land within the original joint venture area for
a period of three years from the date of dropping a property from the joint venture. 
  
 The Amendment referred to herein supersedes all
other prior agreements and understandings, both written and oral, among the parties or any of them, with respect to the subject matter hereof. 
  
 IN WITNESS WHEREOF the parties have executed this Agreement as of the day, month and year first written above. 
  
 
	 MINERA ANDES INC.
 
	  	 	  

 
 
	 
	 By:
 	 	 /s/    Allen V. Ambrose       
 

	 Its:
 	 	 President
 
	  	 	  
	 MINERA ANDES S.A.
 
	  	 	  
	 
	 By:
 	 	 /s/    Brian Gavin    
 

	 Its:
 	 	  
	  	 	  
	 MAURICIO HOCHSCHILD & CIA. LTDA.
 
	  	 	  
	 
	 By:
 	 	 /s/    Jorge Benavides     
 

	 Its:
 	 	 Exploration Manager
 
	  	 	  
	  	 	  

 
  
  
 . 
  







  
 EXHIBIT 1 
  
 
	 PROPERTY TYPE
 
	 	 FILE
 
	 	 AREA REAL
 
	 	 Comments
 

	 El Pluma 1
 	 	 410.411/MA/99
 	 	 750
 	 	 Ex cateo 402.845
 
	 El Pluma 2
 	 	 412.277/MA/99
 	 	 1000
 	 	 Ex cateo 402.845
 
	 El Pluma 3
 	 	 412.279/MA/99
 	 	 750
 	 	 Ex cateo 402.845
 
	 El Pluma 4
 	 	 412.281/MA/99
 	 	 1000
 	 	 Ex cateo 402.845
 
	 El Pluma E1
 	 	 410.412/MA/99
 	 	 1000
 	 	 Ex cateo 403.627
 
	 El Pluma E2
 	 	 412.278/MA/99
 	 	 1000
 	 	 Ex cateo 403.627
 
	 El Pluma E3
 	 	 412.280/MA/99
 	 	 800
 	 	 Ex cateo 403.627
 
	 Saavedra 10
 	 	 413.395/MA/00
 	 	 1000
 	 	 in cateo
 
	 Saavedra 11
 	 	 401.874/MA/01
 	 	 1000
 	 	 in cateo
 
	 Saavedra 12
 	 	 401.875/MA/01
 	 	 1000
 	 	 in cateo
 
	 Saavedra 13
 	 	 401.876/MA/01
 	 	 1000
 	 	 in cateo
 
	 Saavedra 14
 	 	 401.877/MA/01
 	 	 1000
 	 	 in cateo
 
	 Saavedra 1a
 	 	 410.093/MA/99
 	 	 1000
 	 	 in cateo
 
	 Saavedra 2a
 	 	 410.091/MA/99
 	 	 1000
 	 	 in cateo
 
	 Saavedra 3
 	 	 410.096/MA/99
 	 	 800
 	 	 ex cateo
 
	 Saavedra 4
 	 	 410.095/MA/99
 	 	 800
 	 	 in cateo
 
	 Saavedra 5
 	 	 410.089/MA/99
 	 	 800
 	 	 in cateo
 
	 Saavedra 6b
 	 	 410.094/MA/99
 	 	 800
 	 	 ex cateo
 
	 Saavedra 7a
 	 	 410.090/MA/99
 	 	 1000
 	 	 in cateo
 
	 Saavedra 8
 	 	 410.092/MA/99
 	 	 1000
 	 	 in cateo
 
	 Saavedra 9
 	 	 413.396/MA/00
 	 	 1000
 	 	 in cateo
 
	 SaavNE1
 	 	 400.625/MA/01
 	 	 1000
 	 	 ex cateo
 
	 SaavNE2
 	 	 400.626/MA/01
 	 	 1000
 	 	 ex cateo
 
	 SaavNE3
 	 	 400.627/MA/01
 	 	 500
 	 	 ex cateo
 
	 Tres A
 	 	 411.333/MA/99
 	 	 1000
 	 	 ex cateo
 

 







 
	 Tres B
 	 	 411.334/MA/99
 	 	 750
 	 	 ex cateo
 
	 Tres C
 	 	 414.264/MA/00
 	 	 980
 	 	 ex cateo
 
	 Tres Colores A
 	 	 411.332/MA/99
 	 	 1000
 	 	 Ex cateo 406.002
 
	 Tres Colores B
 	 	 411.331/MA/99
 	 	 998.5
 	 	 Ex cateo 406.002
 
	 Tres Colores C
 	 	 414.643/MA/00
 	 	 901
 	 	 Ex cateo 406.002
 
	 Tres Colores D
 	 	 414.642/MA/00
 	 	 901
 	 	 Ex cateo 406.002
 
	 Tres Colores E
 	 	 414.641/MA/00
 	 	 901
 	 	 Ex cateo 406.002
 
	 Tres Colores F
 	 	 414.640/MA/00
 	 	 901
 	 	 Ex cateo 406.002
 
	 Tres Colores G
 	 	 414.639/MA/00
 	 	 397.5
 	 	 Ex cateo 406.002
 
	 Tres D
 	 	 414.265/MA/00
 	 	 770.13
 	 	 ex cateo
 
	 Tres E
 	 	 414.266/MA/00
 	 	 999.93
 	 	 ex cateo
 
	 Tres F
 	 	 414.267/MA/00
 	 	 999.93
 	 	 ex cateo
 
	 Uno A
 	 	 413.095/MA/00
 	 	 840
 	 	 ex cateo
 
	 Uno B
 	 	 413.096/MA/00
 	 	 840
 	 	 ex cateo
 
	 Uno C
 	 	 413.097/MA/00
 	 	 820.2
 	 	 ex cateo
 
	 Uno D
 	 	 400.765/MA/01
 	 	 840
 	 	 ex cateo
 
	 Uno E
 	 	 400.766/MA/01
 	 	 840
 	 	 ex cateo
 
	 Uno F
 	 	 400.764/MA/01
 	 	 594
 	 	 ex cateo
 
	 Uno G
 	 	 401.507/MA/01
 	 	 1103.7
 	 	 ex cateo 406.943
 
	 Uno H
 	 	 401.508/MA/01
 	 	 560.4
 	 	 ex cateo 406.943
 
	 Uno I
 	 	 401.509/MA/01
 	 	 560.4
 	 	 ex cateo 406.943
 
	 AGUAS VIVAS
 	 	 403.089/MSC/01
 	 	 9992
 	 	  
	  	 	  	 	 50490.69