0000909334-01-500033 Sample Contracts

Exhibit 10(aa) ASSET PURCHASE AND SALE AGREEMENT THIS AGREEMENT made as of the 4th day of May, 2001. BETWEEN:

Asset Purchase and Sale Agreement • May 21st, 2001 • Beard Co /Ok • Industrial inorganic chemicals • Texas

• Contract Type
  Asset Purchase and Sale Agreement
• Filed
  May 21st, 2001
• Company
  Beard Co /Ok
• Industry
  Industrial inorganic chemicals
• Jurisdiction
  Texas

AMENDED LETTER LOAN AGREEMENT

Letter Loan Agreement • May 21st, 2001 • Beard Co /Ok • Industrial inorganic chemicals

• Contract Type
  Letter Loan Agreement
• Filed
  May 21st, 2001
• Company
  Beard Co /Ok
• Industry
  Industrial inorganic chemicals