# Relationship history for MSHA mine 1508172

Current hierarchy: **John Mitch Potter → Coal Mac Inc → Be-Be Coal Preparation Plant**

- 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:** Bebe Coal Corp → Be-Be Coal Preparation Plant; 1975-03-01 to 1978-06-07; source msha-controller-operator-history
- **controller_controls_mine:** Conn Emmit E → Be-Be Coal Preparation Plant; 1975-03-01 to 1978-06-07; source msha-controller-operator-history
- **controller_controls_operator:** Conn Emmit E → Bebe Coal Corp; 1975-03-01 to 1978-06-07; source msha-controller-operator-history
- **operator_operates_mine:** Bebe Coal Corp → Be-Be Coal Preparation Plant; 1978-06-08 to 1983-08-24; source msha-controller-operator-history
- **controller_controls_mine:** Zapata Corp → Be-Be Coal Preparation Plant; 1978-06-08 to 1983-08-24; source msha-controller-operator-history
- **controller_controls_operator:** Zapata Corp → Bebe Coal Corp; 1978-06-08 to 1983-08-24; source msha-controller-operator-history
- **operator_operates_mine:** Bebe Coal Corp → Be-Be Coal Preparation Plant; 1983-08-25 to 1987-09-29; source msha-controller-operator-history
- **controller_controls_mine:** Stanford Energy → Be-Be Coal Preparation Plant; 1983-08-25 to 1987-09-29; source msha-controller-operator-history
- **controller_controls_operator:** Stanford Energy → Bebe Coal Corp; 1983-08-25 to 1987-09-29; source msha-controller-operator-history
- **operator_operates_mine:** Bebe Coal Corp → Be-Be Coal Preparation Plant; 1987-09-30 to 1989-10-31; source msha-controller-operator-history
- **controller_controls_mine:** M Lynn  Parrish → Be-Be Coal Preparation Plant; 1987-09-30 to 1989-10-31; source msha-controller-operator-history
- **controller_controls_operator:** M Lynn  Parrish → Bebe Coal Corp; 1987-09-30 to 1989-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Ashland Inc et al → Be-Be Coal Preparation Plant; 1989-10-19 to 1997-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Coal Mac Inc → Be-Be Coal Preparation Plant; 1989-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc et al → Coal Mac Inc; 1989-11-01 to 1997-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Arch Resources Inc → Be-Be Coal Preparation Plant; 1997-07-01 to 2019-10-22; source msha-controller-operator-history
- **controller_controls_operator:** Arch Resources Inc → Coal Mac Inc; 1997-07-01 to 2019-10-22; source msha-controller-operator-history
- **controller_controls_mine:** John Mitch Potter → Be-Be Coal Preparation Plant; 2019-10-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John Mitch Potter → Coal Mac Inc; 2019-10-23 to current/open; source msha-controller-operator-history