# Relationship history for MSHA mine 1511144

Current hierarchy: **Mc Daries Ricky & Kenneth → R & K Coal Company Inc → Surface 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:** Moses Coal Inc → Surface No 1 Mine; 1978-04-01 to 1979-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Moses Elliot J → Surface No 1 Mine; 1978-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moses Elliot J → Moses Coal Inc; 1978-04-01 to 1979-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Somerset Mining Company Inc → Surface No 1 Mine; 1979-05-01 to 1980-01-02; source msha-controller-operator-history
- **controller_controls_mine:** Pullen F W Ii → Surface No 1 Mine; 1979-05-01 to 1980-01-02; source msha-controller-operator-history
- **controller_controls_operator:** Pullen F W Ii → Somerset Mining Company Inc; 1979-05-01 to 1980-01-02; source msha-controller-operator-history
- **operator_operates_mine:** Freedom Coal Company → Surface No 1 Mine; 1980-01-03 to 1982-07-29; source msha-controller-operator-history
- **controller_controls_mine:** Payne Willis Bill & Bert Shanks → Surface No 1 Mine; 1980-01-03 to 1982-07-29; source msha-controller-operator-history
- **controller_controls_operator:** Payne Willis Bill & Bert Shanks → Freedom Coal Company; 1980-01-03 to 1982-07-29; source msha-controller-operator-history
- **operator_operates_mine:** R & K Coal Company Inc → Surface No 1 Mine; 1982-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Daries Ricky & Kenneth → Surface No 1 Mine; 1982-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Daries Ricky & Kenneth → R & K Coal Company Inc; 1982-07-30 to current/open; source msha-controller-operator-history