# Relationship history for MSHA mine 1515786

Current hierarchy: **Warren Dewey → Daily Contracting Inc → #2**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Wilton Contracting → #2; 1986-10-01 to 1988-09-26; source msha-controller-operator-history
- **controller_controls_mine:** Neal Joe → #2; 1986-10-01 to 1988-09-26; source msha-controller-operator-history
- **controller_controls_operator:** Neal Joe → Wilton Contracting; 1986-10-01 to 1988-09-26; source msha-controller-operator-history
- **operator_operates_mine:** Wilton Contracting → #2; 1988-09-27 to 1989-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Gist Charlie → #2; 1988-09-27 to 1989-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Gist Charlie → Wilton Contracting; 1988-09-27 to 1989-11-30; source msha-controller-operator-history
- **operator_operates_mine:** S & D Coal Company → #2; 1989-12-01 to 1990-01-21; source msha-controller-operator-history
- **controller_controls_mine:** Noble James & Ronald Patterson → #2; 1989-12-01 to 1990-01-21; source msha-controller-operator-history
- **controller_controls_operator:** Noble James & Ronald Patterson → S & D Coal Company; 1989-12-01 to 1990-01-21; source msha-controller-operator-history
- **operator_operates_mine:** Beechnut Mining Inc → #2; 1990-01-22 to 1991-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Warren Donnie → #2; 1990-01-22 to 1991-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Warren Donnie → Beechnut Mining Inc; 1990-01-22 to 1991-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Warren Dewey → #2; 1991-03-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Daily Contracting Inc → #2; 1991-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Warren Dewey → Daily Contracting Inc; 1991-04-15 to current/open; source msha-controller-operator-history