# Relationship history for MSHA mine 4703655

Current hierarchy: **Mammoth Energy Services → Taylor Frac LLC → Taylor Frac**

- 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:** Taylor Frac LLC → Taylor Frac; 2012-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James  Gelhar et al → Taylor Frac; 2012-06-07 to 2014-09-11; source msha-controller-operator-history
- **controller_controls_operator:** James  Gelhar et al → Taylor Frac LLC; 2012-06-07 to 2014-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Patrick  McConnell et al → Taylor Frac LLC; 2012-06-07 to 2014-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Wexford Capital LP et al → Taylor Frac; 2014-09-12 to 2017-06-04; source msha-controller-operator-history
- **controller_controls_operator:** Wexford Capital LP et al → Taylor Frac LLC; 2014-09-12 to 2017-06-04; source msha-controller-operator-history
- **controller_controls_operator:** Gulfport Energy Corporation et al → Taylor Frac LLC; 2014-09-12 to 2017-06-04; source msha-controller-operator-history
- **controller_controls_mine:** Mammoth Energy Services → Taylor Frac; 2017-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mammoth Energy Services → Taylor Frac LLC; 2017-06-05 to current/open; source msha-controller-operator-history