# Relationship history for MSHA mine 0503282

Current hierarchy: **Randall & Blake Inc → Nurseries Inc Of Wyoming → Bacon Mine**

- 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:** Capstan Mining Company Inc → Bacon Mine; 1979-01-01 to 1980-04-20; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Bacon Mine; 1979-01-01 to 1980-04-20; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Capstan Mining Company Inc; 1979-01-01 to 1980-04-20; source msha-controller-operator-history
- **operator_operates_mine:** Nurseries Inc Of Wyoming → Bacon Mine; 1980-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Randall & Blake Inc → Bacon Mine; 1980-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randall & Blake Inc → Nurseries Inc Of Wyoming; 1980-04-21 to current/open; source msha-controller-operator-history