<PAGE> 1
FILED PURSUANT TO RULE 424(b)(3)
REGISTRATION STATEMENT NO. 333-8851
PROSPECTUS SUPPLEMENT NUMBER TWO
(TO PROSPECTUS DATED NOVEMBER 5, 1996, AS SUPPLEMENTED BY
PROSPECTUS SUPPLEMENT NUMBER ONE DATED APRIL 4, 1997)
U.S.$86,250,000
6.50% CONVERTIBLE SUBORDINATED NOTES DUE MAY 1, 2003
This Prospectus Supplement supplements information contained in that
certain Prospectus dated November 5, 1996, as amended or supplemented (the
"Prospectus"), relating to the potential sale from time to time of up to
$86,250,000 aggregate amount of Notes and the Common Shares issuable upon
conversion thereof by the Selling Holders. This Prospectus Supplement is not
complete without, and may not be delivered or utilized except in connection
with, the Prospectus, including any amendments or supplements thereto.
Capitalized terms used but not defined herein have the meanings assigned to such
terms in the Prospectus.
The following table supplements the information set forth in the Prospectus
under the caption "Selling Holders" with respect to the Selling Holders and the
respective principal amounts of Offered Securities beneficially owned by such
Selling Holder that may be offered pursuant to the Prospectus:
<TABLE>
<S> <C> <C> <C> <C>
J.W. McConnell Family Trust................. 500,000 500,000 20,114 20,114
AIM Balanced Fund........................... 2,000,000 2,000,000 80,457 80,457
</TABLE>
All information provided in this Prospectus Supplement is as of a recent
practicable date.
THE DATE OF THIS PROSPECTUS SUPPLEMENT IS JUNE 12, 1997.
