the same sentence their minds generally go to some internet sensation like google or apple. but just 50 miles from silicon valley is the san joaquin valley where fortunes were made long before the arrival of microchips and semiconductors. the farm roberto ayala ran, worth tens of millions of dollars, all going to just one extended family, the moores. >> they were very, very private. >> reporter: this is mary, part of the greater moore clan. her family, like many of the big farming families around here, keeps its wealth private, too. >> i knew that there was money there, but they didn't flaunt it in any way, and you weren't told about it. you just knew that it was there. >> reporter: she learned early, she said, that the family fortune was also a tool to keep the descendents in line. >> my dad would say like when i was in high school, if you ever get into drugs or do anything,