Tree Species ID?

[Bill McDermott]

Any ideas what type of tree this was? Storms knocked this down just north of Chicago a couple days ago (mid-April, buds just openening). Live tree, freshly sawed into chunks like this. Keys are in the pictures for size reference.

FYI: I'm planning to use this as a place upon which to pound things in the shop. Bark comes off and the top and bottom get flattened this weekend. Related thoughts or suggestions welcome.

Thanks, Bill

[Mike McCann]

looks like ash to me

[David Dockstader]

Looks like my Mountain Ash in the front yard. Make sure there are no Asian Long-Horned Beetles in it.

[Shawn Pixley]

I'd call it ash.

[Larry Alles]

I think it might be from skyline locust tree. The little twigs are the same as the tree in my backyard.

[Richard Coers]

Mulberry...............................

[Steven Green]

Green Ash I live about 400 miles south of you and it's everywhere

[Bill McDermott]

Ash wins. That'll be great for the intended purpose. Thank you all.