# Relationship history for MSHA mine 1510391

Current hierarchy: **Aubra P  Dean; Carl E  McAfee → The New Coal Company, Inc. → Dayhoit Tipple**

- 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:** Ewing Creek Coal Company Inc → Dayhoit Tipple; 1977-05-01 to 1981-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Prudential Group Inc → Dayhoit Tipple; 1977-05-01 to 1981-01-01; source msha-controller-operator-history
- **controller_controls_operator:** Prudential Group Inc → Ewing Creek Coal Company Inc; 1977-05-01 to 1981-01-01; source msha-controller-operator-history
- **operator_operates_mine:** Energy Resources Ltd → Dayhoit Tipple; 1981-01-02 to 1983-11-06; source msha-controller-operator-history
- **controller_controls_mine:** Energy Resources Ltd → Dayhoit Tipple; 1981-01-02 to 1983-11-06; source msha-controller-operator-history
- **controller_controls_operator:** Energy Resources Ltd → Energy Resources Ltd; 1981-01-02 to 1983-11-06; source msha-controller-operator-history
- **operator_operates_mine:** Shamrock Fuel Inc → Dayhoit Tipple; 1983-11-07 to 1987-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Carl E  McAfee → Dayhoit Tipple; 1983-11-07 to 1987-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Carl E  McAfee → Shamrock Fuel Inc; 1983-11-07 to 1987-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Shamrock Fuel Inc → Dayhoit Tipple; 1987-10-01 to 2002-07-23; source msha-controller-operator-history
- **controller_controls_mine:** Aubra P  Dean et al → Dayhoit Tipple; 1987-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aubra P  Dean et al → Shamrock Fuel Inc; 1987-10-01 to 2002-07-23; source msha-controller-operator-history
- **controller_controls_operator:** James A  Dean et al → Shamrock Fuel Inc; 1987-10-01 to 2002-07-23; source msha-controller-operator-history
- **controller_controls_mine:** Carl E  McAfee et al → Dayhoit Tipple; 1999-08-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** The New Coal Company, Inc. → Dayhoit Tipple; 2002-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl E  McAfee et al → The New Coal Company, Inc.; 2002-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aubra P  Dean et al → The New Coal Company, Inc.; 2002-07-24 to current/open; source msha-controller-operator-history