# Relationship history for MSHA mine 1202168

Current hierarchy: **Shannon  McCoullough; John  Allen → Morton Aggregate,LLC → Morton Aggregate, LLC**

- 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:** Ronald E  Watson → Morton Aggregate, LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Parker Brothers Stone & Gravel Corp → Morton Aggregate, LLC; 1994-09-01 to 2005-04-04; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Parker → Morton Aggregate, LLC; 1994-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Parker → Parker Brothers Stone & Gravel Corp; 1994-09-01 to 2005-04-04; source msha-controller-operator-history
- **operator_operates_mine:** Parker Stone Co. LLC → Morton Aggregate, LLC; 2005-04-05 to 2005-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Michael T  Watson et al → Morton Aggregate, LLC; 2005-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael T  Watson et al → Parker Stone Co. LLC; 2005-04-05 to 2005-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Rodney L  Watson et al → Parker Stone Co. LLC; 2005-04-05 to 2005-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Watson Gravel Inc → Morton Aggregate, LLC; 2006-01-01 to 2012-06-18; source msha-controller-operator-history
- **controller_controls_operator:** Ronald E  Watson → Watson Gravel Inc; 2006-01-01 to 2012-06-18; source msha-controller-operator-history
- **operator_operates_mine:** Morton Aggregate,LLC → Morton Aggregate, LLC; 2012-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Allen et al → Morton Aggregate, LLC; 2012-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Allen et al → Morton Aggregate,LLC; 2012-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shannon  McCoullough et al → Morton Aggregate,LLC; 2012-06-19 to current/open; source msha-controller-operator-history