I think, all in all what Chris was talking about, direct sun areas, dripping off the roofs etc. And our public works lay alot of salt in certain areas, and of course a little of sun, down it goes...and thats why our city and others are now watching salt piles, most sellers are out.......I was told , past winters were "mild", so production this year was limited(that was from granite state minerals/Portsmouth , NH)
However, they have a mountain at the dock, 80-90% of our state purchase from them, towns/city have first dibs.
I'm sitting @ 65 % capacity for now.