EXHIBIT 10.4 FIRST AMENDMENT TO GLOBAL RESOURCE CORPORATION COMMON STOCK WARRANTS CERTIFICATE #1 WHEREAS, Global Resource Corporation (the "Corporation") issued Common Stock Warrants, Certificate #1, dated ____, 2006 to Mobilestream Oil, Inc. (the "Warrants"); WHEREAS, the Warrants have an expiration date of December 31, 2008 and the Corporation desires to extend the expiration date until one hundred twenty days after the Warrants and the Common Stock issuable upon exercise thereof are registered under the Securities Act of 1933 with the U.S. Securities and Exchange Commission; and WHEREAS, the Corporation now desires to further amend the Warrants in certain respects as set forth below; NOW, THEREFORE, it is agreed by and among the parties hereto, intending to be legally bound, that the Warrants are amended as follows: 1. The defined term "Expiration Date" contained in the preamble of the Warrants are amended and restated in its entirety to read as follows: "Expiration Date" shall mean the date which is one hundred twenty days after the date of effectiveness of the registration of these Warrants and the Common Stock to be issued upon exercise of these Warrants under the Securities Act of 1993 with the U.S. Securities and Exchange Commission. 2. Except as expressly amended by this Amendment, the Warrants shall continue in full force and effect. IN WITNESS WHEREOF, the parties hereto have executed this First Amendment to Global Resource Corporation Common Stock Warrants as of this 20th day of November, 2008. GLOBAL RESOURCE CORPORATION By:__________________________________ Name: Eric Swain Title: Chief Executive Officer By:__________________________________ Name: Jeffrey J. Andrews Title: Secretary COUNTERSIGNED BY: Olde Monmouth Stock Transfer Co., Inc. 200 Memorial Parkway, Atlantic Highlands, NJ 07716