In 20-19, for the first time in U-S history, at least half of the country’s college-educated workers were women. But it turns out not many of them want to work in manufacturing jobs. For a company like Caterpillar - the 94-year-old Fortune 500 company best known for its iconic yellow machines - that’s a problem. Denise Johnson is the Resource Industries Group President at Caterpillar.. She joined Fortune’s Most Powerful Women Summit in October.