# Relationship history for MSHA mine 4104317

Current hierarchy: **Group Investment Holdings Inc → Texas Limestone Materials, LLC → Texas Limestone Materials LLC-Plant 4**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Blake A  Kuhlman → Texas Limestone Materials LLC-Plant 4; 1996-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lynn  Pierce → Texas Limestone Materials LLC-Plant 4; 1997-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** All Tex/Lynn Pierce Stone → Texas Limestone Materials LLC-Plant 4; 2001-10-01 to 2008-07-21; source msha-controller-operator-history
- **controller_controls_operator:** Lynn  Pierce → All Tex/Lynn Pierce Stone; 2001-10-01 to 2008-07-21; source msha-controller-operator-history
- **operator_operates_mine:** J C Evans Construction Company → Texas Limestone Materials LLC-Plant 4; 2008-07-22 to 2013-04-01; source msha-controller-operator-history
- **controller_controls_operator:** Blake A  Kuhlman → J C Evans Construction Company; 2008-07-22 to 2013-04-01; source msha-controller-operator-history
- **operator_operates_mine:** Texas Limestone Materials, LLC → Texas Limestone Materials LLC-Plant 4; 2013-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Group Investment Holdings Inc → Texas Limestone Materials LLC-Plant 4; 2013-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Group Investment Holdings Inc → Texas Limestone Materials, LLC; 2013-04-02 to current/open; source msha-controller-operator-history