# Relationship history for MSHA mine 4101003

Current hierarchy: **Celine L Gillibrand Trust → P.W. Gillibrand of Texas, LLC. → Voca South**

- 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

- **operator_operates_mine:** Oglebay Norton Industrial Sands Inc → Voca South; 1950-01-01 to 2002-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Oglebay Norton Company → Voca South; 1950-01-01 to 2008-02-12; source msha-controller-operator-history
- **controller_controls_operator:** Oglebay Norton Company → Oglebay Norton Industrial Sands Inc; 1950-01-01 to 2002-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Oglebay Norton Company → Voca South; 1990-05-08 to 2008-02-12; source msha-controller-operator-history
- **operator_operates_mine:** Texas Mining LP → Voca South; 2002-02-26 to 2008-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Oglebay Norton Company → Texas Mining LP; 2002-02-26 to 2008-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Carmeuse Holding SA → Voca South; 2008-02-13 to 2012-04-01; source msha-controller-operator-history
- **controller_controls_operator:** Carmeuse Holding SA → Oglebay Norton Industrial Sands Inc; 2008-02-13 to 2002-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Carmeuse Holding SA → Voca South; 2008-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carmeuse Holding SA → Texas Mining LP; 2008-02-13 to 2008-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Pioneer Sands LLC → Voca South; 2009-01-01 to 2019-04-04; source msha-controller-operator-history
- **controller_controls_operator:** Oglebay Norton Company → Pioneer Sands LLC; 2009-01-01 to 2008-02-12; source msha-controller-operator-history
- **controller_controls_operator:** Carmeuse Holding SA → Pioneer Sands LLC; 2009-01-01 to 2012-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Pioneer Natural Resources USA Incorporated → Voca South; 2012-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pioneer Natural Resources USA Incorporated → Oglebay Norton Industrial Sands Inc; 2012-04-02 to 2002-02-25; source msha-controller-operator-history
- **controller_controls_operator:** Pioneer Natural Resources USA Incorporated → Pioneer Sands LLC; 2012-04-02 to 2019-04-04; source msha-controller-operator-history
- **operator_operates_mine:** P.W. Gillibrand of Texas, LLC. → Voca South; 2019-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Celine L  Gillibrand → Voca South; 2019-04-05 to 2022-07-05; source msha-controller-operator-history
- **controller_controls_operator:** Celine L  Gillibrand → P.W. Gillibrand of Texas, LLC.; 2019-04-05 to 2022-07-05; source msha-controller-operator-history
- **controller_controls_mine:** Celine L Gillibrand Trust → Voca South; 2022-07-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Celine L Gillibrand Trust → P.W. Gillibrand of Texas, LLC.; 2022-07-06 to current/open; source msha-controller-operator-history