# Relationship history for MSHA mine 1506275

Current hierarchy: **James B  Newman → Elk Horn Coal Co., LLC → Price 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:** Island Creek Coal Company → Price Plant; 1950-01-01 to 1982-02-02; source msha-controller-operator-history
- **controller_controls_mine:** Occidental Petroleum Corp → Price Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Occidental Petroleum Corp → Island Creek Coal Company; 1950-01-01 to 1982-02-02; source msha-controller-operator-history
- **operator_operates_mine:** Wheelwright Mining Inc → Price Plant; 1982-02-03 to 1992-01-28; source msha-controller-operator-history
- **controller_controls_mine:** Inspiration Resources Corporation → Price Plant; 1982-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Inspiration Resources Corporation → Wheelwright Mining Inc; 1982-02-03 to 1992-01-28; source msha-controller-operator-history
- **operator_operates_mine:** Wheelwright Mining Company → Price Plant; 1992-01-29 to 2006-01-17; source msha-controller-operator-history
- **controller_controls_mine:** Left Beaver Mining Inc → Price Plant; 1992-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Left Beaver Mining Inc → Wheelwright Mining Company; 1992-01-29 to 2006-01-17; source msha-controller-operator-history
- **controller_controls_mine:** Pen Holdings Inc → Price Plant; 1996-10-01 to 2006-01-17; source msha-controller-operator-history
- **operator_operates_mine:** The Elk Horn Coal Company, LLC → Price Plant; 2006-01-18 to 2010-06-03; source msha-controller-operator-history
- **controller_controls_mine:** James B  Newman → Price Plant; 2006-01-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James B  Newman → The Elk Horn Coal Company, LLC; 2006-01-18 to 2010-06-03; source msha-controller-operator-history
- **controller_controls_operator:** Pen Holdings Inc → The Elk Horn Coal Company, LLC; 2006-01-18 to 2006-01-17; source msha-controller-operator-history
- **operator_operates_mine:** New Vision Energy LLC → Price Plant; 2010-06-04 to 2011-02-01; source msha-controller-operator-history
- **controller_controls_mine:** Henderson Resources LLC et al → Price Plant; 2010-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Henderson Resources LLC et al → New Vision Energy LLC; 2010-06-04 to 2011-02-01; source msha-controller-operator-history
- **controller_controls_operator:** Phoenix Management Group LLC et al → New Vision Energy LLC; 2010-06-04 to 2011-02-01; source msha-controller-operator-history
- **operator_operates_mine:** Elk Horn Coal Co., LLC → Price Plant; 2011-02-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James B  Newman → Elk Horn Coal Co., LLC; 2011-02-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pen Holdings Inc → Elk Horn Coal Co., LLC; 2011-02-02 to 2006-01-17; source msha-controller-operator-history