This is just the beginning! Our collection holds over 300 years of history, including rare newspapers, obituaries, marriage records, birth records, and so much more—most of which you won’t find anywhere else!
Sun powered irrigation system turns desert into green fields
At Paloma Ranch near Gila Bend Arizona Battelle Memorial Institute and Northwestern Mutual Life Insurance Co deploy a world’s largest solar irrigation setup. Agricultural engineer Graham Alexander explains a 50 horsepower pump powered by parabolic collectors and solar heat drives 10,000 gallons per minute into 35 miles of ditches. The system runs nine months a year and needs sun to operate. a clouded morning delays pumping as operators monitor temperature and collector tracking.
MENTIONED IN THIS ARTICLE
Gila Bend
Phoenix
Graham Alexander
Alexander
Battelle Memorial Institute of
Columbus
Ohio
Battelle and
Northwestern Mutual Life Insurance Co
Milwaukee
Here
Paloma Ranch
Northwestern Mutual
Cranco
California
Paloma
Battelle
Northwestern