# Relationship history for MSHA mine 0504128

Current hierarchy: **Casey N  McClellan → McStone Aggregates LLC → El Jay Crusher**

- 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:** Haycamp Gravel → El Jay Crusher; 1986-03-01 to 2000-07-21; source msha-controller-operator-history
- **controller_controls_mine:** Jim  Goode → El Jay Crusher; 1986-03-01 to 2000-07-21; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Goode → Haycamp Gravel; 1986-03-01 to 2000-07-21; source msha-controller-operator-history
- **operator_operates_mine:** Haycamp Gravel → El Jay Crusher; 2000-07-22 to 2007-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Aryol W  Brumley et al → El Jay Crusher; 2000-07-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aryol W  Brumley et al → Haycamp Gravel; 2000-07-22 to 2007-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Terry R  Gorsuch et al → Haycamp Gravel; 2000-07-22 to 2007-02-28; source msha-controller-operator-history
- **operator_operates_mine:** McStone Aggregates LLC → El Jay Crusher; 2007-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Daren R  Stone et al → El Jay Crusher; 2007-03-01 to 2009-05-22; source msha-controller-operator-history
- **controller_controls_operator:** Daren R  Stone et al → McStone Aggregates LLC; 2007-03-01 to 2009-05-22; source msha-controller-operator-history
- **controller_controls_operator:** Kathy J  Stone et al → McStone Aggregates LLC; 2007-03-01 to 2009-05-22; source msha-controller-operator-history
- **controller_controls_mine:** Yvonne  McClellan et al → El Jay Crusher; 2009-05-23 to 2013-11-03; source msha-controller-operator-history
- **controller_controls_operator:** Yvonne  McClellan et al → McStone Aggregates LLC; 2009-05-23 to 2013-11-03; source msha-controller-operator-history
- **controller_controls_operator:** Casey N  McClellan et al → McStone Aggregates LLC; 2009-05-23 to 2013-11-03; source msha-controller-operator-history
- **controller_controls_mine:** Casey N  McClellan → El Jay Crusher; 2013-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Casey N  McClellan → McStone Aggregates LLC; 2013-11-04 to current/open; source msha-controller-operator-history