# Relationship history for MSHA mine 0405331

Current hierarchy: **John H  Franklin → Franklin Construction Inc → Deer Creek Plant**

- 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:** John H  Franklin → Deer Creek Plant; 1990-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Deer Creek Rock → Deer Creek Plant; 1997-09-01 to 2005-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Scott D  Stephens → Deer Creek Plant; 1997-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott D  Stephens → Deer Creek Rock; 1997-09-01 to 2005-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Franklin Construction Inc → Deer Creek Plant; 2006-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John H  Franklin → Franklin Construction Inc; 2006-01-01 to current/open; source msha-controller-operator-history