Sandy Steele and Quiz Taylor constructed an oil reservoir analyzer as their entry in the Science Fair. They didn’t win first prize, but they were offered summer jobs in the oil fields of Four Corners. This book is the story of that action-packed summer. As the boys search for oil and uranium, they must unmask a dangerous masquerader!
The Sandy Steele Adventure Series, originally published in 1959, is a thrilling set of mysteries in the spirit of the Hardy Boys and The Three Investigators. Great fun for young mystery readers and fans of classic mystery fiction!