51. Kathy Lehne
$380 Million Age 56 Residence: houston
When Puerto Rico was devastated by a hurricane in 2017, Lehne worked round-the-clock to send fuel via military transport planes and ships to help restore power to the island. Her wholesale fuel marketer and distributor, sun coast Resources, has been on the scene of almost every major hurricane in the last decade with its fleet of over 1,000 trucks. Lehne never went to college and started the company with $2,000 in savings at age 23.