Broken glass/ceramic/metallic objects found in tunnel

[ZXCVBNM]

These items were scattered around inside a large tunnel. Is anyone able to identify any of these objects?

 

[pepperj]

Need some better photos.
Take photo of each grouping, glass, iron, nails, relics.
It's helpful to do the photos in daylight, and focused, close up if possible.

 

[crashbandicoot]

They almost look like someone worked on a car and let the old parts fall where they might,I,m sure that,s not right but Hey,maybe good for a yuk!

 

[islamoradamark]

I see rust