William Blair & Company, L.L.C. Jefferies & Company, Inc. KeyBanc Capital Markets Inc. Davenport & Company LLC c/o William Blair & Company, L.L.C. 222 West Adams Street Chicago, Illinois 60606 Ladies and Gentlemen:Pricing Agreement • May 29th, 2007 • Castle a M & Co • Wholesale-metals service centers & offices • Illinois
You have advised the Company and the Selling Stockholders that the Underwriters propose to make a public offering of their respective portions of the Shares as soon as you deem advisable after the registration statement hereinafter referred to becomes effective, if it has not yet become effective, and the Pricing Agreement, hereinafter defined, has been executed and delivered.
