<Page> EXHIBIT 4 HAWKINS, JAMES & STILL EQUIPMENT CO. 1220 E. Loop 304 P.O. Box 550 Crockett, Texas 75835 936-544-2011 "John Deere in East Texas" August 19, 2002 The following is the fair market value on the equipment of Seven J Stock Farm: <Table> <Caption> Make Model Serial Number Amount -------------------------------------------------------------------------------------------------- 1 John Deere 2750 Tractor ROPS/Canopy L02750G558093 12,000.00 5505 hours 2 John Deere 2030 Tractor ROPS, 2WD L54254 3,800.00 3 John Deere 970 Tractor ROPS, 2WD M00970A120055 7,000.00 1943 Hours 4 John Deere STX 38 Lawn Mower M00STXB139102 650.00 5 Master Craft 642 Forklift 567N 3,500.00 1/2 value of 7,000.00 6 Case IH MX180 Cab 2WD JJA0112395 55,000.00 462 hours 7 Schulte 5026 Rotary Mower C502690271907 10,000.00 26' width 8 Shop Built 10' Rotary Mower, pull type N/A 2,000.00 9 Servis Gyro 84 Rotary Mower, pull type N/A 600.00 10 Aerway 10' Renovator, pull type JP44N 3,500.00 11 Killefer Plow 10' Chiesel Plow 100-1 250.00 12 Rhino SPHD Post Hole Digger 10412 450.00 9' Auger and 12" Auger 13 Eurospan Spreader 31006 200.00 9 bushel </Table> JOHN DEERE <Page> HAWKINS, JAMES & STILL EQUIPMENT CO. 1220 E. Loop 304 P.O. Box 550 Crockett, Texas 75835 936-544-2011 *John Deere in East Texas* <Table> 14 Bowie AD Tree Shaker 620335 500.00 15 Wylie 300 gallon sprayer/skid 800.00 10' boom kit and pump 16 Wylie 3 pt. 110 gallon sprayer 400.00 17 Kawasaki Mule ATV 4X4 1,500.00 TOTAL 102,150.00 </Table> /s/Steve Hawkins - ---------------------- Steve Hawkins Owner/Manager JOHN DEERE