# Relationship history for MSHA mine 4001380

Current hierarchy: **Johnson Arvil-Tony & James → Lucky Four Coal Tipple → No 1 Tipple**

- 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

- **operator_operates_mine:** Earnest Viers & Company → No 1 Tipple; 1973-01-01 to 1978-03-30; source msha-controller-operator-history
- **controller_controls_mine:** Viers Ernest → No 1 Tipple; 1973-01-01 to 1978-03-30; source msha-controller-operator-history
- **controller_controls_operator:** Viers Ernest → Earnest Viers & Company; 1973-01-01 to 1978-03-30; source msha-controller-operator-history
- **operator_operates_mine:** K Y V A Coals Inc → No 1 Tipple; 1978-03-31 to 1985-01-13; source msha-controller-operator-history
- **controller_controls_mine:** Tayloe Paul D → No 1 Tipple; 1978-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tayloe Paul D → K Y V A Coals Inc; 1978-03-31 to 1985-01-13; source msha-controller-operator-history
- **operator_operates_mine:** Lucky Four Coal Tipple → No 1 Tipple; 1985-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Johnson Arvil-Tony & James → No 1 Tipple; 1985-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Arvil-Tony & James → Lucky Four Coal Tipple; 1985-01-14 to current/open; source msha-controller-operator-history