Hello.
If you are in the town you could use Mapillary to upload pictures of the places. It could be very useful. We don´t have access to see those concrete:plates you are adding. But it seems very strange. Acording to the wiki those are prefabricated and dismountable. I have never seen in Chile something like that.

regards
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            Published using OSMCha: https://osmcha.org/changesets/173996441
            