I don’t know the reasons, perhaps stress or replacement cycles. What I can tell you, if you look closely when driving by the big wind farm near Desert Hot Sprin

I don’t know the reasons, perhaps stress or replacement cycles. What I can tell you, if you look closely when driving by the big wind farm near Desert Hot Springs, they have blades in many places on the ground. Have a look for yourself, pan around a bit... https://www.google.com/maps/place/Cabazon,+CA+92230/@33.9100776,-116.5676197,249m/data=!3m1!1e3!4m6!3m5!1s0x80db3f7240a30933:0xd5842863d635b000!8m2!3d33.9167448!4d-116.7829262!16zL20vMHIzZ2Y?entry=ttu https://www.google.com/maps/place/Cabazon,+CA+92230/@33.9100...