1 EXHIBIT 4.02 AMENDMENT NUMBER ONE TO LOAN AND SECURITY AGREEMENT THIS AMENDMENT NUMBER ONE TO LOAN AND SECURITY AGREEMENT (this "Amendment"), dated effective as of August 12, 1999 is entered into by and among Grant Geophysical, Inc., a Delaware...Loan and Security Agreement • November 15th, 1999 • Grant Geophysical Inc • Oil & gas field exploration services • Massachusetts
1 EXHIBIT 4.03 AMENDMENT NUMBER TWO TO LOAN AND SECURITY AGREEMENT THIS AMENDMENT NUMBER TWO TO LOAN AND SECURITY AGREEMENT (this "Amendment"), dated effective as of September 23, 1999, is entered into by and among Grant Geophysical, Inc., a Delaware...Loan and Security Agreement • November 15th, 1999 • Grant Geophysical Inc • Oil & gas field exploration services • Massachusetts
