# Relationship history for MSHA mine 4404447

Current hierarchy: **Metinvest B V → Patrick Coal Corp → #2 Preparation 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

- **operator_operates_mine:** H & M Coal Corp → #2 Preparation Plant; 1976-05-01 to 1978-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Mc Clanahan Avery → #2 Preparation Plant; 1976-05-01 to 1978-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clanahan Avery → H & M Coal Corp; 1976-05-01 to 1978-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Patrick Petroleum Corp Of Michigan → #2 Preparation Plant; 1978-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Commonwealth Resources Inc → #2 Preparation Plant; 1978-10-05 to 1980-10-29; source msha-controller-operator-history
- **controller_controls_mine:** Hess Arthur → #2 Preparation Plant; 1978-10-05 to 1980-10-29; source msha-controller-operator-history
- **controller_controls_operator:** Hess Arthur → Commonwealth Resources Inc; 1978-10-05 to 1980-10-29; source msha-controller-operator-history
- **operator_operates_mine:** Patrick Coal Corp → #2 Preparation Plant; 1980-10-30 to 1984-05-22; source msha-controller-operator-history
- **controller_controls_operator:** Patrick Petroleum Corp Of Michigan → Patrick Coal Corp; 1980-10-30 to 1984-05-22; source msha-controller-operator-history
- **operator_operates_mine:** Patrick Coal Corp → #2 Preparation Plant; 1984-05-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** United  Company → #2 Preparation Plant; 1984-05-23 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Patrick Coal Corp; 1984-05-23 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Metinvest B V → #2 Preparation Plant; 2009-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Metinvest B V → Patrick Coal Corp; 2009-04-30 to current/open; source msha-controller-operator-history