We use cookies on our site to analyze traffic, enhance your experience, and provide you with tailored content.

For more information visit our privacy policy.

Exhibit 10.13 FROM: EARTH SCIENCES, INC., Mark H. McKinnies TO: CODSA 14 S.A., ENG. PEDRO PEREZ DATE: JANUARY 9, 1998 RE: LETTER AGREEMENT Between CODSA 14 S.A. ("CODSA 14") and EARTH SCIENCES, INC. ("ESI") AND RECURSOS MINERALES VENESI C.A....