# Relationship history for MSHA mine 3607266

Current hierarchy: **Robindale Energy Services Inc → Robindale Energy Services → Dilltown**

- 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:** Alco Standard Corp → Dilltown; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Barnes & Tucker Company → Dilltown; 1982-01-01 to 1986-09-29; source msha-controller-operator-history
- **controller_controls_operator:** Alco Standard Corp → Barnes & Tucker Company; 1982-01-01 to 1986-09-29; source msha-controller-operator-history
- **operator_operates_mine:** Barnes & Tucker Company → Dilltown; 1986-09-30 to 1989-01-29; source msha-controller-operator-history
- **controller_controls_mine:** Allen A  Wenturine → Dilltown; 1986-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allen A  Wenturine → Barnes & Tucker Company; 1986-09-30 to 1989-01-29; source msha-controller-operator-history
- **operator_operates_mine:** RNS Services Inc → Dilltown; 1989-01-30 to 2010-03-30; source msha-controller-operator-history
- **controller_controls_mine:** Robindale Energy Services Inc → Dilltown; 1989-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robindale Energy Services Inc → RNS Services Inc; 1989-01-30 to 2010-03-30; source msha-controller-operator-history
- **controller_controls_mine:** Robindale Energy Services Inc → Dilltown; 2001-06-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Robindale Energy Services → Dilltown; 2010-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robindale Energy Services Inc → Robindale Energy Services; 2010-03-31 to current/open; source msha-controller-operator-history