# Relationship history for MSHA mine 4405770

Current hierarchy: **Alpha Natural Resources, Inc. → Knox Creek Coal Corporation → Black Dog #1**

- 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:** C & R Energy Inc → Black Dog #1; 1981-10-01 to 1986-01-06; source msha-controller-operator-history
- **controller_controls_mine:** Roger  Childress → Black Dog #1; 1981-10-01 to 1986-01-06; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Childress → C & R Energy Inc; 1981-10-01 to 1986-01-06; source msha-controller-operator-history
- **operator_operates_mine:** Chaparal Coal Company Inc → Black Dog #1; 1986-01-07 to 1989-03-16; source msha-controller-operator-history
- **controller_controls_mine:** James C  Ball → Black Dog #1; 1986-01-07 to 1989-03-16; source msha-controller-operator-history
- **controller_controls_operator:** James C  Ball → Chaparal Coal Company Inc; 1986-01-07 to 1989-03-16; source msha-controller-operator-history
- **operator_operates_mine:** Simeron Fuels Inc → Black Dog #1; 1989-03-17 to 1989-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Dennis Allen  Ramey → Black Dog #1; 1989-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis Allen  Ramey → Simeron Fuels Inc; 1989-03-17 to 1989-04-06; source msha-controller-operator-history
- **operator_operates_mine:** Top Flite Coal Corp → Black Dog #1; 1989-04-07 to 1989-08-17; source msha-controller-operator-history
- **controller_controls_mine:** Hank K  Matney  et al → Black Dog #1; 1989-04-07 to 1992-02-23; source msha-controller-operator-history
- **controller_controls_operator:** Hank K  Matney  et al → Top Flite Coal Corp; 1989-04-07 to 1989-08-17; source msha-controller-operator-history
- **operator_operates_mine:** Bronco Mining Inc → Black Dog #1; 1989-08-18 to 1990-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Roger  Coleman → Black Dog #1; 1989-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Coleman → Bronco Mining Inc; 1989-08-18 to 1990-04-10; source msha-controller-operator-history
- **operator_operates_mine:** Thunder Valley Energy Inc → Black Dog #1; 1990-04-11 to 1990-09-13; source msha-controller-operator-history
- **controller_controls_mine:** Vernon D  Richmond → Black Dog #1; 1990-04-11 to 1990-09-13; source msha-controller-operator-history
- **controller_controls_operator:** Vernon D  Richmond → Thunder Valley Energy Inc; 1990-04-11 to 1990-09-13; source msha-controller-operator-history
- **operator_operates_mine:** C C Mining Inc → Black Dog #1; 1990-09-14 to 1993-09-26; source msha-controller-operator-history
- **controller_controls_mine:** Darrell  Monk → Black Dog #1; 1990-09-14 to 1993-09-26; source msha-controller-operator-history
- **controller_controls_operator:** Darrell  Monk → C C Mining Inc; 1990-09-14 to 1993-09-26; source msha-controller-operator-history
- **controller_controls_mine:** James Wayne  Estep → Black Dog #1; 1991-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Warren Coal Company Inc → Black Dog #1; 1993-09-27 to 1993-11-15; source msha-controller-operator-history
- **controller_controls_operator:** James Wayne  Estep → Warren Coal Company Inc; 1993-09-27 to 1993-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Black Dog Coal Corp → Black Dog #1; 1993-11-16 to 2001-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Ronnie A  Edwards → Black Dog #1; 1993-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronnie A  Edwards → Black Dog Coal Corp; 1993-11-16 to 2001-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Black Dog #1; 1997-08-26 to 2011-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Knox Creek Coal Corporation → Black Dog #1; 2001-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Knox Creek Coal Corporation; 2001-05-22 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Black Dog #1; 2011-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Knox Creek Coal Corporation; 2011-06-01 to current/open; source msha-controller-operator-history