# Relationship history for MSHA mine 1100586

Current hierarchy: **Gerald L Nudo → Alpena Vision Resources LLC → Murdock 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:** Zeigler Coal Company → Murdock Mine; 1950-01-01 to 1985-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Houston Natural Gas Corp → Murdock Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Houston Natural Gas Corp → Zeigler Coal Company; 1950-01-01 to 1985-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Old Ben Coal Company → Murdock Mine; 1985-02-01 to 1998-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Zeigler Coal Holding Company → Murdock Mine; 1985-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Zeigler Coal Holding Company → Old Ben Coal Company; 1985-02-01 to 1998-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Hoskins John A → Murdock Mine; 1993-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Old Ben Coal Company → Murdock Mine; 1998-09-02 to 2000-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Murdock Mine; 1998-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Old Ben Coal Company; 1998-09-02 to 2000-07-19; source msha-controller-operator-history
- **operator_operates_mine:** Coal Carbon Inc → Murdock Mine; 2000-07-20 to 2003-05-07; source msha-controller-operator-history
- **controller_controls_operator:** Hoskins John A → Coal Carbon Inc; 2000-07-20 to 2003-05-07; source msha-controller-operator-history
- **operator_operates_mine:** Little Dozing Service Inc. → Murdock Mine; 2003-05-08 to 2007-07-12; source msha-controller-operator-history
- **controller_controls_mine:** Myron  Little → Murdock Mine; 2003-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Myron  Little → Little Dozing Service Inc.; 2003-05-08 to 2007-07-12; source msha-controller-operator-history
- **operator_operates_mine:** Alpena Vision Resources LLC → Murdock Mine; 2007-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeff J  Konczak → Murdock Mine; 2007-07-13 to 2015-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Jeff J  Konczak → Alpena Vision Resources LLC; 2007-07-13 to 2015-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Gerald L Nudo → Murdock Mine; 2015-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gerald L Nudo → Alpena Vision Resources LLC; 2015-07-23 to current/open; source msha-controller-operator-history