An organisation that mines: a cooperative, an association, a small company or an individual operator.
Every entry in this group is the same kind of thing, so they sit on one ring, ordered so that entries linked to each other sit near each other. Bodies reaching in from outside the group are drawn beyond it.
A link whose validity window has closed is drawn dashed and stays on the map. An expired title or a former operator is a finding, not noise.
Drawn beyond the outer ring: cross-border bodies with a link into this group. They belong to no one country, so they sit outside every group and reach into several.
Relationships crossing out of this group, gathered by where they land.
The nodes above, as a list. Each one opens the Hub’s own page, with its relationships and the source passage behind each of them.