Russia has tarried in developing tax laws and a production-sharing agreement for foreign oil concerns.

Sidanko was among the five largest Russian oil concerns.

No Russian oil concern, analysts point out, is a "company" in the Western sense, with clear books and effective management.

Roger Enright possessed millions, an oil concern and no sense of restraint.

Also, a small stake in the assets held by Sibneft, another Russian oil concern, will have to be addressed.

On the broadest level, foreign oil concerns question how stable Iraq would be after a war.

And United States oil companies now account for 11 of the 18 largest foreign oil concerns operating in this country.

And Pdvsa, a partner for the foreign oil concerns, is still suffering from the after-effects of the strike.

Chuck Norman, an investigator for the committee, said other oil concerns were under scrutiny and information about them would be turned over to the authorities.

For asset-rich companies, like oil concerns, he buys at a discount to, say, proven reserves.