Market Regulation Services Inc.

Market Regulation Services Inc.

June 14, 2007 12:17 ET

Market Regulation Services Inc.: Halt, MacDonald, Dettwiler and Associates Ltd.

TORONTO, ONTARIO--(Marketwire - June 14, 2007) - The following issue(s) have been halted today:



Company MacDonald,
Dettwiler and
Associates Ltd.

TSX Symbol MDA

Reason Pending News

Halt Time (EST) 12:00 PM

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