JOINT FILING AGREEMENT December 24, 2003

EXHIBIT 1

JOINT FILING AGREEMENT

December 24, 2003

     In accordance with Rule 13d-1(f) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13D referred to below) on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the Common Stock, par value $0.01 per share, of Duratek, Inc., a Delaware corporation, and that this Joint Filing Agreement may be included as an Exhibit to such joint filing.

     This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

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     IN WITNESS WHEREOF, the undersigned hereby execute this Joint Filing Agreement as of the date first written above.

		Carlyle Partners II, L.P.
		By:		TC Group II, L.L.C., its general partner
		By:		TC Group, L.L.C., its managing member
		By:		TCG Holdings, L.L.C., its managing member
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director
		Carlyle SBC Partners II, L.P.
		By:		TC Group II, L.L.C., its general partner
		By:		TC Group, L.L.C., its managing member
		By:		TCG Holdings, L.L.C., its managing member
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director
		Carlyle International Partners II, L.P.
		By:		TC Group II, L.L.C., its general partner
		By:		TC Group, L.L.C., its managing member
		By:		TCG Holdings, L.L.C., its managing member
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director
		Carlyle International Partners III, L.P.
		By:		TC Group II, L.L.C., its general partner
		By:		TC Group, L.L.C., its managing member
		By:		TCG Holdings, L.L.C., its managing member
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director

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		C/S International Partners, L.P.
		By:		TC Group II, L.L.C., its general partner
		By:		TC Group, L.L.C., its managing member
		By:		TCG Holdings, L.L.C., its managing member
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director
		Carlyle-GTSD Partners II, L.P.
		By:		TC Group, L.L.C., its managing member
		By:		TCG Holdings, L.L.C., its managing member
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director
		TC Group, L.L.C.
		By:		TCG Holdings, L.L.C., its managing member
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director
		TC Group II, L.L.C.
		By:		TC Group, L.L.C., its managing member
		By:		TCG Holdings, L.L.C., its managing member
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director
		TCG Holdings, L.L.C.
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director

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		XX XX Investment Holdings, L.L.C.
		By:		TC Group Investment Holdings, L.P., its managing member
		By:		TCG Holdings II, L.P., its general partner
		By:		DBD Investors V, L.L.C., its general partner
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director
		TC Group Investment Holdings, L.P.,
		By:		TCG Holdings II, L.P., its general partner
		By:		DBD Investors V, L.L.C., its general partner
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director
		TCG Holdings II, L.P.
		By:		DBD Investors V, L.L.C., its general partner
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director
		DBD Investors V, L.L.C.
		By:		/s/ Xxxxxx X. X’Xxxxxxx
				Name: Xxxxxx X. X’Xxxxxxx
				Title: Managing Director

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