# Relationship history for MSHA mine 3606395

Current hierarchy: **Elwood  Swank → Split Vein Coal Company Inc → Bagging 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:** Elwood  Swank → Bagging Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Candlelite Coal Inc → Bagging Plant; 1977-04-01 to 1988-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Swank Ronald → Bagging Plant; 1977-04-01 to 1988-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Swank Ronald → Candlelite Coal Inc; 1977-04-01 to 1988-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Split Vein Coal Company Inc → Bagging Plant; 1988-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elwood  Swank → Split Vein Coal Company Inc; 1988-04-01 to current/open; source msha-controller-operator-history