# Relationship history for MSHA mine 3606724

Current hierarchy: **Shiko David R → Burnside Mining Company → No 2 Slope**

- 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:** Dorkoski Kenneth → No 2 Slope; 1977-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Burnside Mining Company Inc → No 2 Slope; 1978-08-01 to 1979-12-02; source msha-controller-operator-history
- **controller_controls_operator:** Dorkoski Kenneth → Burnside Mining Company Inc; 1978-08-01 to 1979-12-02; source msha-controller-operator-history
- **operator_operates_mine:** Burnside Mining Company Inc → No 2 Slope; 1979-12-03 to 1982-11-04; source msha-controller-operator-history
- **controller_controls_mine:** Bramhall Donald → No 2 Slope; 1979-12-03 to 1982-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Bramhall Donald → Burnside Mining Company Inc; 1979-12-03 to 1982-11-04; source msha-controller-operator-history
- **operator_operates_mine:** Burnside Mining Company Inc → No 2 Slope; 1982-11-05 to 1984-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Kucheskie Anthony Et Al → No 2 Slope; 1982-11-05 to 1984-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Kucheskie Anthony Et Al → Burnside Mining Company Inc; 1982-11-05 to 1984-05-17; source msha-controller-operator-history
- **operator_operates_mine:** Burnside Mining Company Inc → No 2 Slope; 1984-05-18 to 1985-04-09; source msha-controller-operator-history
- **controller_controls_mine:** Wehry Paul & Clair Kehler → No 2 Slope; 1984-05-18 to 1985-04-09; source msha-controller-operator-history
- **controller_controls_operator:** Wehry Paul & Clair Kehler → Burnside Mining Company Inc; 1984-05-18 to 1985-04-09; source msha-controller-operator-history
- **operator_operates_mine:** Burnside Mining Company Inc → No 2 Slope; 1985-04-10 to 1986-10-21; source msha-controller-operator-history
- **controller_controls_mine:** Socko Leonard J → No 2 Slope; 1985-04-10 to 1986-10-21; source msha-controller-operator-history
- **controller_controls_operator:** Socko Leonard J → Burnside Mining Company Inc; 1985-04-10 to 1986-10-21; source msha-controller-operator-history
- **operator_operates_mine:** Burnside Mining Company → No 2 Slope; 1986-10-22 to 1989-01-03; source msha-controller-operator-history
- **controller_controls_mine:** Robert E  Yarger → No 2 Slope; 1986-10-22 to 1989-01-03; source msha-controller-operator-history
- **controller_controls_operator:** Robert E  Yarger → Burnside Mining Company; 1986-10-22 to 1989-01-03; source msha-controller-operator-history
- **operator_operates_mine:** Burnside Mining Company → No 2 Slope; 1989-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Shiko David R → No 2 Slope; 1989-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shiko David R → Burnside Mining Company; 1989-01-04 to current/open; source msha-controller-operator-history