The Effect of SFAS No. 141 and SFAS No. 142 on the Accuracy of Financial Analysts' Earnings Forecasts after Mergers Page: 84

                                
diagnose, prevent and treat human diseases. We also conduct research to find
products to treat diseases in animals and to increase the efficiency of animal
food production.
SIC 29.
4-th pair.
AHC   The Registrant and its subsidiaries explore for, produce, purchase, transport and
sell crude oil and natural gas. These exploration and production activities
take place in the United States, United Kingdom, Norway, Denmark, Equatorial
Guinea, Algeria, Gabon, Indonesia, Thailand, Azerbaijan, Malaysia and other
countries. The Corporation also manufactures, purchases, trades and markets
refined petroleum and other energy products.
PCOU Premcor Inc. and its subsidiaries (the Company) is an independent petroleum
refiner and supplier of unbranded transportation fuels, heating oil,
petrochemical feedstocks, petroleum coke and other petroleum products in the
United States. As of December 31, 2002, the Company owned and operated two
refineries with a combined crude oil throughput capacity of 420,000 barrels per
day ( bpd ). The refineries are located in Port Arthur, Texas and Lima, Ohio.
SIC 35.
5-th pair
RSYS RadiSys Corporation (RadiSys or the Company) provides embedded systems
for compute, data processing, and network-intensive applications to Original
Equipment Manufacturers ( OEM s) within the commercial systems, service
provider systems, and enterprise systems markets. The Company focuses on
industry-leading solutions while working in a close virtual division
relationship with its customers. The Company s value proposition to its
customers is providing leading technology solutions while improving their
time-to-market advantage and reducing total life-cycle costs.
MYK   Mykrolis is a worldwide developer, manufacturer and supplier of liquid and gas
delivery systems, components and consumables used to precisely measure,
deliver, control and purify the process liquids, gases and chemicals, as well
as the deionized water, photoresists and vacuum systems, that are used in the
semiconductor manufacturing process. In addition, our products are used to
manufacture a range of other products, such as flat panel displays, high purity
chemicals, photoresists, solar cells, gas lasers, optical and magnetic storage
devices and fiber optic cables.
SIC 36.
6-th pair.
GSPN    GlobespanVirata is a leading provider of integrated circuits, software and
system designs for broadband communication applications that enable high-speed

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