# Relationship history for MSHA mine 2402151

Current hierarchy: **Kip A  McClendon → Rock It Crushing LLC → Portable Crusher**

- 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:** Gasvoda Construction → Portable Crusher; 1998-09-01 to 2010-06-07; source msha-controller-operator-history
- **controller_controls_mine:** Gasvoda Jay M → Portable Crusher; 1998-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gasvoda Jay M → Gasvoda Construction; 1998-09-01 to 2010-06-07; source msha-controller-operator-history
- **operator_operates_mine:** Two Rivers Sand & Gravel Inc. → Portable Crusher; 2010-06-08 to 2011-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Ryan  Conner et al → Portable Crusher; 2010-06-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ryan  Conner et al → Two Rivers Sand & Gravel Inc.; 2010-06-08 to 2011-04-06; source msha-controller-operator-history
- **controller_controls_operator:** Robin  Conner et al → Two Rivers Sand & Gravel Inc.; 2010-06-08 to 2011-04-06; source msha-controller-operator-history
- **operator_operates_mine:** Rock It Crushing LLC → Portable Crusher; 2011-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David  Wiediger → Portable Crusher; 2011-04-07 to 2013-08-23; source msha-controller-operator-history
- **controller_controls_operator:** David  Wiediger → Rock It Crushing LLC; 2011-04-07 to 2013-08-23; source msha-controller-operator-history
- **controller_controls_mine:** Kip A  McClendon → Portable Crusher; 2013-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kip A  McClendon → Rock It Crushing LLC; 2013-08-24 to current/open; source msha-controller-operator-history