FIRST SUPPLEMENTAL INDENTURE

TEREX CORPORATION

$300,000,000

7-3/8% Senior Subordinated Notes due 2014

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FIRST SUPPLEMENTAL INDENTURE

Dated as of June 25, 2008

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HSBC BANK USA, NATIONAL ASSOCIATION, AS TRUSTEE

FIRST SUPPLEMENTAL INDENTURE

FIRST SUPPLEMENTAL INDENTURE, dated as of June 25, 2008, between TEREX CORPORATION, a Delaware corporation (the "Company"), and HSBC BANK USA, National Association, a national banking association, (as successor to HSBC Bank USA) as trustee (the "Trustee").

WHEREAS, the Company, the Subsidiary Guarantors (as defined therein) and the Trustee are parties to an Indenture dated November 25, 2003 (said Indenture, as it may hereafter from time to time be amended, the "Indenture"), providing for the issuance of the Company's 7-3/8% Senior Subordinated Notes due 2014 (the "Notes"); and

WHEREAS, the Company directly, or indirectly through its subsidiaries, owns all of the outstanding capital stock or membership interests, as the case may be, of the following companies: A.S.V. Distribution, Inc.; A.S.V., Inc.; Duvalpilot Equipment Outfitters, LLC; Halco America Inc.; Hydra Platforms Mfg. Inc.; Loegering Mfg. Inc.; Powerscreen USC Inc.; Schaeff of North America, Inc.; Superior Highwall Holding, Inc.; Superior Highwall Miners, Inc.; Terex Aerials, Inc.; Terex Mexico, LLC; and Terex USA, LLC (collectively referred to herein as the “New Guarantors” and individually as a “New Guarantor”); and

WHEREAS, pursuant to the terms of Section 4.20 of the Indenture, the New Guarantors are Restricted Subsidiaries organized under the laws of the United States and, as such, the Company is required to cause the New Guarantors to execute and deliver a supplemental indenture and the Subsidiary Guarantee endorsed on the Notes; and

WHEREAS, the Company, the Subsidiary Guarantors and the Trustee desire to amend the Indenture to add each of the New Guarantors as a Subsidiary Guarantor under the Indenture.

NOW, THEREFORE, the Company, the Subsidiary Guarantors, the New Guarantors and the Trustee agree as follows for the equal and ratable benefit of the Holders of the Notes.

Section 1.01 .    Each New Guarantor shall hereby become a Subsidiary Guarantor under the Indenture effective as of the date hereof, and as such shall be entitled to all the benefits and be subject to all the obligations of a Subsidiary Guarantor thereunder. Each New Guarantor agrees to be bound by all