# Relationship history for MSHA mine 4401534

Current hierarchy: **Justus Timothy → Dyna Carb Coal Company Inc → No 1 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:** Black Diamond Fuel Company → No 1 Mine; 1950-01-01 to 1972-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Fields Resources Inc → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fields Resources Inc → Black Diamond Fuel Company; 1950-01-01 to 1972-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Mc Clanahan Roy → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B S & A Coal Co → No 1 Mine; 1973-01-01 to 1974-03-31; source msha-controller-operator-history
- **controller_controls_mine:** B S & A Coal Co → No 1 Mine; 1973-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** B S & A Coal Co → B S & A Coal Co; 1973-01-01 to 1974-03-31; source msha-controller-operator-history
- **operator_operates_mine:** T B & J Coal → No 1 Mine; 1974-04-01 to 1975-03-25; source msha-controller-operator-history
- **controller_controls_mine:** Dotson Bobby & James Little → No 1 Mine; 1974-04-01 to 1985-03-26; source msha-controller-operator-history
- **controller_controls_operator:** Dotson Bobby & James Little → T B & J Coal; 1974-04-01 to 1975-03-25; source msha-controller-operator-history
- **controller_controls_mine:** Justus Timothy Et Al → No 1 Mine; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & S Coal Company → No 1 Mine; 1975-03-26 to 1975-09-15; source msha-controller-operator-history
- **controller_controls_mine:** Corbin Eugene  Cline et al → No 1 Mine; 1975-03-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Corbin Eugene  Cline et al → C & S Coal Company; 1975-03-26 to 1975-09-15; source msha-controller-operator-history
- **operator_operates_mine:** R M Coal Company → No 1 Mine; 1975-09-16 to 1976-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clanahan Roy → R M Coal Company; 1975-09-16 to 1976-02-09; source msha-controller-operator-history
- **operator_operates_mine:** Dyna Carb Coal Company Inc → No 1 Mine; 1976-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justus Timothy Et Al → Dyna Carb Coal Company Inc; 1976-02-10 to current/open; source msha-controller-operator-history