It was the kind of clear, crisp spring day that made people happy they lived in Houston—azaleas in bloom, the landscape aswirl in pink and coral and scarlet. Vicki Hollub, the CEO of Occidental Petroleum, strode triumphantly into a Woodlands conference center for a meeting of her newly expanded corporation last March. Not quite five and a half feet tall, dressed in one of her innocuous knit suits, she hardly looked the part of the oil and gas tycoon. But less than a year earlier she had out-oilmanned just about every oilman there was.Read Full Article »