# Relationship history for MSHA mine 3304379

Current hierarchy: **Sylvia  Danison; Jim  Fry → London Tile Company → LONDON TILE PIT**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Jim  Fry et al → LONDON TILE PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** London Tile Company → LONDON TILE PIT; 1996-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Fry et al → London Tile Company; 1996-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sylvia  Danison et al → London Tile Company; 1996-07-01 to current/open; source msha-controller-operator-history