EXHIBIT 24.3
                                       
  
                              POWER OF ATTORNEY
  
     KNOW ALL MEN BY THESE PRESENTS, that Arthur R. Peterson, Jr. constitutes 
and appoints John Simonelli, Larry E. Howell and Michael E. Dunn, and each of 
them, his true and lawful attorney-in-fact and agent, with all power of 
substitution and resubstitution, for him and in his name, place and stead, in 
any and all capacities, to sign any or all amendments to this Registration 
Statement, including post-effective amendments thereto, and to file the same, 
with all exhibits thereto, and other documents in connection therewith with 
the Securities and Exchange Commission, granting unto same attorneys-in-fact 
and agents, and each of them, full power and authority to do and perform each 
and every act and thing requisite and necessary to be done in and about the 
premises, as fully to all intents and purposes as he might or could do in 
person, hereby ratifying and confirming all that said attorneys-in-fact and 
agents, or any of them, or their substitute or substitutes, may lawfully do 
or cause to be done by virtue hereof.


Dated February 19, 1998                 /s/ Arthur R. Peterson, Jr.
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                                        Arthur R. Peterson, Jr.