Exhibit 4.3 SECOND SUPPLEMENTAL INDENTURE SECOND SUPPLEMENTAL INDENTURE (this "SECOND SUPPLEMENTAL INDENTURE"), dated as of March 31, 2004 among Grey Wolf Mexico Holdings LLC, a Nevada limited liability company (the "NEW GUARANTOR"), a subsidiary of...Supplemental Indenture • May 5th, 2004 • Grey Wolf Inc • Drilling oil & gas wells • New York
INDENTUREGrey Wolf Inc • May 5th, 2004 • Drilling oil & gas wells • New York
EXHIBIT 4.2 REGISTRATION RIGHTS AGREEMENT Dated as of March 31, 2004 By and Between GREY WOLF, INC., as the Company,Registration Rights Agreement • May 5th, 2004 • Grey Wolf Inc • Drilling oil & gas wells • New York
ARTICLE II AMENDMENTS TO LOAN AGREEMENTLoan Agreement • May 5th, 2004 • Grey Wolf Inc • Drilling oil & gas wells • New York
