HP67 Keyboard Internal Cracks x 4

[jftman]

I opened this tonight to do a gummy. When I separated the two plates some small copper pieces fell out of somewhere.
I noticed the four marked aluminum pads split on the side, with the other sides ok .

Are the pictured copper 'things' a repair method to prolong the damages? If true, how am I going to reinstall them. How do they help?
I don't have another idea in mind for these things.