Exhibit 10.33 Amendment No. 1 to International Daywork Exploration Drilling Services Contract THIS AMENDMENT NO. 1 dated the 21st day of October, 1998, is made between Challenger Oil Services, PLC, a company organized under the lays of England and...International Daywork Exploration Drilling Services Contract • April 15th, 1999 • Chaparral Resources Inc • Crude petroleum & natural gas
