While landmines have the obvious explosive and shrapnel first order effect of causing great harm, I'm wondering about the subtler effects of fiber optic cable pollution.

What happens when someone uses agricultural machinery on a field littered with cable, both to machinery and people? What are the consequences of consuming broken bits of cable that may mingle into produce?

And most critically, if the above are issues, how do you then remove cable from fields at scale? It would seem maddening to try to detect and gather kilometers of tangled glass.