# Relationship history for MSHA mine 4605569

Current hierarchy: **Martin Vernon D → T P L E Corp → Shc 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:** East Anawalt Tipple Inc → Shc Tipple; 1977-07-01 to 1977-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Pocahontas Group Inc → Shc Tipple; 1977-07-01 to 1977-10-13; source msha-controller-operator-history
- **controller_controls_operator:** Pocahontas Group Inc → East Anawalt Tipple Inc; 1977-07-01 to 1977-10-13; source msha-controller-operator-history
- **operator_operates_mine:** T P L E Corp → Shc Tipple; 1977-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Martin Vernon D → Shc Tipple; 1977-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin Vernon D → T P L E Corp; 1977-10-14 to current/open; source msha-controller-operator-history