Disposition/Negative Pledge or Encumbrance of Collateral and Other Assets. Except only for sales of Hydrocarbons derived from the Mortgaged Property in the normal and ordinary course of business, Borrowers will not sell or encumber (via mortgage, pledge, security agreement, trust transfers or similar asset protection devices or entities or otherwise) any of the Collateral or more than $250,000.00 of any other Hydrocarbon producing properties or working or royalty interests of whatever nature or type, whether to an Affiliate of Borrowers or otherwise, without first obtaining Bank's written consent thereto (which consent shall not be unreasonably withheld) and Borrowers will provide Bank with written notice of the sale or other disposition of any obsolete, worn out or other unused items of equipment (whether Collateral or otherwise) or any proposed sale, lease, transfer or other disposition of or mortgage, pledge, granting of a security interest in or encumbrance against any of the other assets of Borrowers, subject, however, to Borrowers' right to sell up to $250,000.00 worth, in the aggregate for Borrowers, of their properties or assets not constituting Collateral in the ordinary course of business during any calendar year without prior notice to Bank. Borrowers will not dispose of any of their assets other than in the normal and prudent ordinary course of their business operations.