Chevron Corp. is shrinking its staff from its crude-oil refining and marketing segments by more than 20% as fuel demand remains low, The Wall Street Journal reported. Some 2,000 workers were laid off in 2009, and an equal number of layoffs are ahead this year and more are expected to continue in 2011. In 2008,…

Cigarettes continue to be the top in-store category based on sales dollars. On a monthly basis, the industry per store average over the past year was $39,127. However, its gross profit contribution slipped to 3.2% to $6,152 falling behind package beverages ($6,526), according to the National Association of Convenience Stores State of the Industry report.…