# Relationship history for MSHA mine 4602177

Current hierarchy: **Gary  Morgan → Twoinone Coal Company, Inc. → Mine 105-A**

- 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:** Beth Energy Mines Inc → Mine 105-A; 1950-01-01 to 1991-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Bethlehem Steel Corp → Mine 105-A; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bethlehem Steel Corp → Beth Energy Mines Inc; 1950-01-01 to 1991-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Rauer Coal Corp → Mine 105-A; 1991-07-01 to 1992-02-07; source msha-controller-operator-history
- **controller_controls_mine:** Lanny M  Rauer → Mine 105-A; 1991-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lanny M  Rauer → Rauer Coal Corp; 1991-07-01 to 1992-02-07; source msha-controller-operator-history
- **operator_operates_mine:** 2m Energy Inc → Mine 105-A; 1992-02-08 to 1994-03-03; source msha-controller-operator-history
- **controller_controls_mine:** Morgan Joseph D & Gary D → Mine 105-A; 1992-02-08 to 1994-03-03; source msha-controller-operator-history
- **controller_controls_operator:** Morgan Joseph D & Gary D → 2m Energy Inc; 1992-02-08 to 1994-03-03; source msha-controller-operator-history
- **operator_operates_mine:** Rauer Coal Corp → Mine 105-A; 1994-03-04 to 2002-04-22; source msha-controller-operator-history
- **controller_controls_operator:** Lanny M  Rauer → Rauer Coal Corp; 1994-03-04 to 2002-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Gary  Morgan → Mine 105-A; 2002-01-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Twoinone Coal Company, Inc. → Mine 105-A; 2002-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Morgan → Twoinone Coal Company, Inc.; 2002-04-23 to current/open; source msha-controller-operator-history