<PAGE> 1
Filed Pursuant to Rule 424(b)(3)
Registration No. 333-22189
SUPPLEMENT
On April 14, 1997, certain of the Selling Stockholders entered into a
Purchase Agreement with Salomon Brothers Inc and Jefferies & Company, Inc. to
sell 500,000 of the Shares for $9.125 per share net to the Selling Stockholders
as follows:
<TABLE>
<CAPTION>
NUMBER OF
SELLING STOCKHOLDER SHARES SOLD
------------------- --------------
<S> <C>
First Reserve Secured Energy Asset Fund, Limited
Partnership............................................... 106,060 shares
American Gas & Oil Investors Limited Partnership............ 196,970 shares
AmGO II, Limited Partnership................................ 196,970 shares
</TABLE>
