# Relationship history for MSHA mine 4401549

Current hierarchy: **MAPCO Inc → Koch Carbon Inc → Rl-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:** Dilston Mining Corp → Rl-1 Mine; 1950-01-01 to 1976-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Ratliff Arthur M Jr → Rl-1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ratliff Arthur M Jr → Dilston Mining Corp; 1950-01-01 to 1976-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Merritt Jerry L → Rl-1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gulf + Western Industries Inc & Raven Smokeless Co → Rl-1 Mine; 1976-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Raven Anchor Smokeless Coal Company → Rl-1 Mine; 1976-09-21 to 1977-09-28; source msha-controller-operator-history
- **controller_controls_operator:** Gulf + Western Industries Inc & Raven Smokeless Co → Raven Anchor Smokeless Coal Company; 1976-09-21 to 1977-09-28; source msha-controller-operator-history
- **operator_operates_mine:** Phoenix Mining Corp → Rl-1 Mine; 1977-09-29 to 1978-06-11; source msha-controller-operator-history
- **controller_controls_mine:** Sizemore James N → Rl-1 Mine; 1977-09-29 to 1978-06-11; source msha-controller-operator-history
- **controller_controls_operator:** Sizemore James N → Phoenix Mining Corp; 1977-09-29 to 1978-06-11; source msha-controller-operator-history
- **operator_operates_mine:** Sizemore Coal Company Inc → Rl-1 Mine; 1978-06-12 to 1978-10-29; source msha-controller-operator-history
- **controller_controls_mine:** Sizemore Keith → Rl-1 Mine; 1978-06-12 to 1978-10-29; source msha-controller-operator-history
- **controller_controls_operator:** Sizemore Keith → Sizemore Coal Company Inc; 1978-06-12 to 1978-10-29; source msha-controller-operator-history
- **operator_operates_mine:** Charlie Coal Company Inc → Rl-1 Mine; 1978-10-30 to 1980-04-16; source msha-controller-operator-history
- **controller_controls_mine:** Sturgill Billy R → Rl-1 Mine; 1978-10-30 to 1980-04-16; source msha-controller-operator-history
- **controller_controls_operator:** Sturgill Billy R → Charlie Coal Company Inc; 1978-10-30 to 1980-04-16; source msha-controller-operator-history
- **controller_controls_mine:** Koch Industries Inc → Rl-1 Mine; 1979-05-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Farwest Coal Company → Rl-1 Mine; 1980-04-17 to 1980-05-07; source msha-controller-operator-history
- **controller_controls_operator:** Merritt Jerry L → Farwest Coal Company; 1980-04-17 to 1980-05-07; source msha-controller-operator-history
- **operator_operates_mine:** L & S Coal Company Inc → Rl-1 Mine; 1980-05-08 to 1980-11-11; source msha-controller-operator-history
- **controller_controls_mine:** Lambert Robert → Rl-1 Mine; 1980-05-08 to 1980-11-11; source msha-controller-operator-history
- **controller_controls_operator:** Lambert Robert → L & S Coal Company Inc; 1980-05-08 to 1980-11-11; source msha-controller-operator-history
- **operator_operates_mine:** Scottie Coal Company Inc → Rl-1 Mine; 1980-11-12 to 1981-08-17; source msha-controller-operator-history
- **controller_controls_mine:** Miller Ralph → Rl-1 Mine; 1980-11-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Miller Ralph → Scottie Coal Company Inc; 1980-11-12 to 1981-08-17; source msha-controller-operator-history
- **operator_operates_mine:** Evie Coal Company Inc → Rl-1 Mine; 1981-08-18 to 1987-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Vernie  Perkins → Rl-1 Mine; 1981-08-18 to 1987-04-01; source msha-controller-operator-history
- **controller_controls_operator:** Vernie  Perkins → Evie Coal Company Inc; 1981-08-18 to 1987-04-01; source msha-controller-operator-history
- **operator_operates_mine:** Oakwood Mining Inc → Rl-1 Mine; 1987-04-02 to 1993-01-10; source msha-controller-operator-history
- **controller_controls_mine:** Honaker Steve → Rl-1 Mine; 1987-04-02 to 1993-01-10; source msha-controller-operator-history
- **controller_controls_operator:** Honaker Steve → Oakwood Mining Inc; 1987-04-02 to 1993-01-10; source msha-controller-operator-history
- **operator_operates_mine:** Sherry Lynn Coal Company Inc → Rl-1 Mine; 1993-01-11 to 1993-07-01; source msha-controller-operator-history
- **controller_controls_mine:** Curtis Robert J → Rl-1 Mine; 1993-01-11 to 1993-07-01; source msha-controller-operator-history
- **controller_controls_operator:** Curtis Robert J → Sherry Lynn Coal Company Inc; 1993-01-11 to 1993-07-01; source msha-controller-operator-history
- **operator_operates_mine:** Double A & A Coal Company Inc → Rl-1 Mine; 1993-07-02 to 1993-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Anders Gregory → Rl-1 Mine; 1993-07-02 to 1993-10-24; source msha-controller-operator-history
- **controller_controls_operator:** Anders Gregory → Double A & A Coal Company Inc; 1993-07-02 to 1993-10-24; source msha-controller-operator-history
- **operator_operates_mine:** S & J Coal Company Inc → Rl-1 Mine; 1993-10-25 to 1994-03-06; source msha-controller-operator-history
- **controller_controls_mine:** Seay Joseph → Rl-1 Mine; 1993-10-25 to 1994-04-10; source msha-controller-operator-history
- **controller_controls_operator:** Seay Joseph → S & J Coal Company Inc; 1993-10-25 to 1994-03-06; source msha-controller-operator-history
- **operator_operates_mine:** Koch Carbon Inc → Rl-1 Mine; 1994-03-07 to 1994-11-03; source msha-controller-operator-history
- **controller_controls_operator:** Koch Industries Inc → Koch Carbon Inc; 1994-03-07 to 1994-11-03; source msha-controller-operator-history
- **operator_operates_mine:** Koch Carbon Inc → Rl-1 Mine; 1994-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** MAPCO Inc → Rl-1 Mine; 1994-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MAPCO Inc → Koch Carbon Inc; 1994-11-04 to current/open; source msha-controller-operator-history