On April 21st

The April 21, 1836 battle is documented. The site's documented military history is the record the rest of the file stands on. It's verified history: the dossier's load-bearing detail. The detail is preserved in 'San Jacinto'. The entry's timeline holds it; the lore holds the rest. The file stays open on it.

The April 1917 collapse flooded the Treadwell workings with seawater, ending operations; the ruins remain. The record dates it to 1917-04-21. Treadwell Mining Complex's documented past — geological and human — is the verified layer beneath the legends. The record holds it as fact — documented, not retold. The record appears in 'Treadwell gold mine'. The entry's timeline holds it; the lore holds th

On April 21, 1917, the sea broke through into the Treadwell mine's workings — the greatest gold complex of its era, which had tunneled beneath Gastineau Channel itself — and the flooded mine never reopened. The ruins, slowly consumed by saltwater and forest, now form a heritage trail where building shells stand above drowned shafts.