# Relationship history for MSHA mine 3606036

Current hierarchy: **Alvin E  Naugle Jr → L M M Inc → Keely 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:** Low Vol Energies Inc → Keely Mine; 1976-04-01 to 1977-05-18; source msha-controller-operator-history
- **controller_controls_mine:** A Wayne  Corle → Keely Mine; 1976-04-01 to 1977-05-18; source msha-controller-operator-history
- **controller_controls_operator:** A Wayne  Corle → Low Vol Energies Inc; 1976-04-01 to 1977-05-18; source msha-controller-operator-history
- **operator_operates_mine:** Fossil Energies Inc → Keely Mine; 1977-05-19 to 1980-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Myron  Corle → Keely Mine; 1977-05-19 to 1980-01-16; source msha-controller-operator-history
- **controller_controls_operator:** Myron  Corle → Fossil Energies Inc; 1977-05-19 to 1980-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Dash Coal Company Inc → Keely Mine; 1980-01-17 to 2001-07-04; source msha-controller-operator-history
- **controller_controls_mine:** Donald A  Soberdash → Keely Mine; 1980-01-17 to 2001-07-04; source msha-controller-operator-history
- **controller_controls_operator:** Donald A  Soberdash → Dash Coal Company Inc; 1980-01-17 to 2001-07-04; source msha-controller-operator-history
- **controller_controls_mine:** Alvin E  Naugle Jr → Keely Mine; 1996-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** L M M Inc → Keely Mine; 2001-07-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alvin E  Naugle Jr → L M M Inc; 2001-07-05 to current/open; source msha-controller-operator-history