Since this thread was started, we discovered that the "hum" we heard upNorth was coming from the renovation of the lighthouse
that is out in the lake about 3 miles from us.
The hum has stopped since they finished the years long work.
It is now open as an "overnight, 2 day weekend" or afternoon visit by tourists.
I haven't heard it the last two summers at all. Either that or the quarry machinery...etc was changed.
__________________
All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
************************************
.
Weezie looking at petunias 8.25.2017
****************************
These forums are for mutual support and information sharing only. The forums are not a substitute for medical advice, diagnosis or treatment provided by a qualified health care provider. Always consult your doctor before trying anything you read here.