Notice to Members

Notice No. 236
05/03/2007

New Margin Rates and Tiers for the Financially Settled Uranium Futures Contracts

EFFECTIVE DATE: Monday, May 7, 2007 (close of business)

FUTURES CONTRACTS: Uranium Futures Contract (UX)

CONTRACT MONTHS: All Months

Outright (Scan) Tiers for UX

Tiers	*New*
1	All Months

NYMEX Division Outright (Scan) Margin for UX

Commodity	Clearing Member / Maintenance Margin	Member Customer Initial Margin	Non-Member Customer Initial Margin
	*New*	*New*	*New*
UX	$2,500	$2,750	$3,375

Intra-Commodity Spread Tiers for UX

Tiers	*New*
1	All Months

Intra-Commodity Spread Margin for UX

Commodity	Clearing Member / Maintenance Margin	Member Customer Initial Margin	Non-Member Customer Initial Margin
	*New*	*New*	*New*
UX	$500	$550	$675

Should you have any questions or require any further information, please contact exchangeinfo@nymex.com