# Relationship history for MSHA mine 4607121

Current hierarchy: **Losch Larry E → Ann-Grey Industries Ltd → Hope #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

- **controller_controls_mine:** Sears Casey & Emery Smallman → Hope #1; 1973-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cecil  Nichols → Hope #1; 1976-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Murphy James C Jr → Hope #1; 1984-04-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jamar Coal Company Inc → Hope #1; 1986-05-01 to 1986-08-07; source msha-controller-operator-history
- **controller_controls_operator:** Murphy James C Jr → Jamar Coal Company Inc; 1986-05-01 to 1986-08-07; source msha-controller-operator-history
- **operator_operates_mine:** N & F Mining Company Inc → Hope #1; 1986-08-08 to 1989-02-05; source msha-controller-operator-history
- **controller_controls_operator:** Cecil  Nichols → N & F Mining Company Inc; 1986-08-08 to 1989-02-05; source msha-controller-operator-history
- **controller_controls_mine:** Klaproth Abner H & Joe Bill Bowers → Hope #1; 1988-11-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fiesta Mining Inc → Hope #1; 1989-02-06 to 1990-08-12; source msha-controller-operator-history
- **controller_controls_mine:** R Bruce  Ferguson et al → Hope #1; 1989-02-06 to 1990-10-15; source msha-controller-operator-history
- **controller_controls_operator:** R Bruce  Ferguson et al → Fiesta Mining Inc; 1989-02-06 to 1990-08-12; source msha-controller-operator-history
- **operator_operates_mine:** Taner Coal Company Inc → Hope #1; 1990-08-13 to 1991-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Sears Casey & Emery Smallman → Taner Coal Company Inc; 1990-08-13 to 1991-02-11; source msha-controller-operator-history
- **operator_operates_mine:** Big Valley Coal Corp → Hope #1; 1991-02-12 to 1992-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Klaproth Abner H & Joe Bill Bowers → Big Valley Coal Corp; 1991-02-12 to 1992-07-06; source msha-controller-operator-history
- **operator_operates_mine:** Consolidated Management Inc → Hope #1; 1992-07-07 to 1993-02-07; source msha-controller-operator-history
- **controller_controls_mine:** Mc Court Loye → Hope #1; 1992-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Court Loye → Consolidated Management Inc; 1992-07-07 to 1993-02-07; source msha-controller-operator-history
- **operator_operates_mine:** Ann-Grey Industries Ltd → Hope #1; 1993-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Losch Larry E → Hope #1; 1993-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Losch Larry E → Ann-Grey Industries Ltd; 1993-02-08 to current/open; source msha-controller-operator-history