That looks a lot like Acer platanoides, I dont know the english name but google throws norway maple at me. We have a lot of those in Germany.
edit: Silver maple seems to be closer, but we dont have those in Germany.
The break is not very far off the ground (reported at 7 or 8 ft) so my plan is to access by ladder then lanyard into whatever stem(s) seem appropriate. Looks like it may be easiest to clean up the break with a chainsaw rather than handsaw. Agree? Maples have tender bark so I will tread lightly. Any suggestions on pruning back the splintered area? Do's and don'ts?