EIGHTH AMENDMENT TO CAMPBELL/SIMPSON
TONKIN SPRINGS VENTURE LIMITED PARTNERSHIP MINING LEASE
Amendment Number Eight dated April 20, 1992 (“Effective Date”) to that certain Mining Lease dated
January 1, 1986 between Lyle F. Campbell, a single man and Julian E. and Jean C. Simpson, husband and wife
(collectively “Campbell/Simpson”) and Tonkin Springs Gold Mining Company (“TSGMC”) (the “Lease”).
A. Lyle F. Campbell has assigned his interest in the Lease and the property covered by the Lease to
The Lyle F. Campbell Trust. Lyle F. Campbell is the sole trustee of The Lyle F. Campbell Trust.
B. TSGMC assigned the Lease to Homestake Mining Company of California (“Homestake”).
C. Homestake assigned the Lease to the Tonkin Springs Venture Limited Partnership (“Venture”).
D. The boundary line referenced in Article 33 of the Lease has been modified and surveyed. A
Certificate of Survey of the boundary line has been recorded in the official records of Eureka County File No.
E. The Venture has relocated certain of the unpatented mining claims covered by the Lease and has
located additional claims within the Area of Interest to the Lease.
F. Campbell/Simpson has conveyed to the Venture all of Campbell/Simpson’s right, title and interest in
and to the TSG unpatented mining claims numbers 156, 157, 163 and 164; and the Venture has conveyed to
Campbell/Simpson all of the Venture’s right, title and interest in and to the TSG unpatented mining claims
numbers 228, 229, 230, 231, 232, 260, 261 and 292.
G. Campbell/Simpson and the Venture desire to amend the Lease to describe the property now
covered by the Lease and to amend Articles 6, 32 and 33 of the Lease.
THEREFORE, the parties agree as follows:
1. The mining property covered by the Lease is described in Exhibit A attached hereto (“Mineral
2. Article 6 of the Lease is deleted