Exhibit 99 Joint Filer Information (1) Name: SNPE Address: 12, Quai Henri IV 75181 Paris Cedex 04 Cedex, FRANCE Designated Filer: SNPE, Inc. (A) Issuer & Ticker Symbol: Dynamic Materials Corporation (BOOM) Date of Event Requiring Statement: 6/8/05 Signature: /s/ Francois Schwartz Date: 06/15/05 ------------------------------------- ---------------- Name: Francois Schwartz Title: Chief Financial Officer On behalf of SNPE (2) Name: SOFIGEXI Address: 12, Quai Henri IV 75004 Paris FRANCE Designated Filer: SNPE, Inc. (A) Issuer & Ticker Symbol: Dynamic Materials Corporation (BOOM) Date of Event Requiring Statement: 6/8/05 Signature: /s/ Francois Schwartz Date: 06/15/05 ------------------------------------- ---------------- Name: Francois Schwartz Title: President and CEO On behalf of SOFIGEXI (A) SNPE, Inc. is a wholly-owned subsidiary of SOFIGEXI, which is a wholly-owned subsidiary of SNPE. Prior to December 22, 1999, SNPE was an indirect beneficial owner through the holdings of Nobel Explosifs France, another wholly owned subsidiary of SNPE.