# Relationship history for MSHA mine 3002511

Current hierarchy: **Eldon M  King → D&H EXCAVATING, INC. → D&H EXCAVATING, INC.**

- 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:** Spencer James W → D&H EXCAVATING, INC.; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Town Of Wethersfield → D&H EXCAVATING, INC.; 1980-05-01 to 1985-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Town Of Wethersfield-NY → D&H EXCAVATING, INC.; 1980-05-01 to 1985-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Town Of Wethersfield-NY → Town Of Wethersfield; 1980-05-01 to 1985-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Spencer & Haley Inc → D&H EXCAVATING, INC.; 1985-07-01 to 1988-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Spencer James W → Spencer & Haley Inc; 1985-07-01 to 1988-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Freedom Gravel Products Inc → D&H EXCAVATING, INC.; 1989-01-01 to 2017-07-26; source msha-controller-operator-history
- **controller_controls_mine:** J  Arcadi → D&H EXCAVATING, INC.; 1989-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J  Arcadi → Freedom Gravel Products Inc; 1989-01-01 to 2017-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Eldon M  King → D&H EXCAVATING, INC.; 2006-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Town Of Wethersfield-NY → D&H EXCAVATING, INC.; 2010-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Town Of Wethersfield-NY → Town Of Wethersfield; 2010-06-10 to 1985-06-30; source msha-controller-operator-history
- **operator_operates_mine:** D&H EXCAVATING, INC. → D&H EXCAVATING, INC.; 2017-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eldon M  King → D&H EXCAVATING, INC.; 2017-07-27 to current/open; source msha-controller-operator-history