# Relationship history for MSHA mine 4104913

Current hierarchy: **Arcosa, Inc → Arcosa Aggregates Texas, LLC → Midkiff #1865**

- 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:** Charles W  Harrison Jr → Midkiff #1865; 1950-01-01 to 2014-07-14; source msha-controller-operator-history
- **controller_controls_mine:** Matthew Ward  Hanna → Midkiff #1865; 2010-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Paul  Walker → Midkiff #1865; 2011-05-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hardin-Walker Development Inc → Midkiff #1865; 2011-10-28 to 2012-01-15; source msha-controller-operator-history
- **controller_controls_operator:** Paul  Walker → Hardin-Walker Development Inc; 2011-10-28 to 2012-01-15; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Materials, Inc. → Midkiff #1865; 2012-01-16 to 2012-05-03; source msha-controller-operator-history
- **controller_controls_operator:** Matthew Ward  Hanna → Pinnacle Materials, Inc.; 2012-01-16 to 2012-05-03; source msha-controller-operator-history
- **controller_controls_mine:** Matthew Ward  Hanna → Midkiff #1865; 2012-04-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Materials LLC → Midkiff #1865; 2012-05-04 to 2013-08-07; source msha-controller-operator-history
- **controller_controls_operator:** Matthew Ward  Hanna → Pinnacle Materials LLC; 2012-05-04 to 2013-08-07; source msha-controller-operator-history
- **operator_operates_mine:** Allied Custom Gypsum → Midkiff #1865; 2013-08-08 to 2013-08-08; source msha-controller-operator-history
- **controller_controls_operator:** Charles W  Harrison Jr → Allied Custom Gypsum; 2013-08-08 to 2013-08-08; source msha-controller-operator-history
- **operator_operates_mine:** ACG Materials → Midkiff #1865; 2013-08-09 to 2018-12-05; source msha-controller-operator-history
- **controller_controls_mine:** Charles W  Harrison Jr → Midkiff #1865; 2013-08-09 to 2015-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Charles W  Harrison Jr → ACG Materials; 2013-08-09 to 2015-09-30; source msha-controller-operator-history
- **controller_controls_mine:** H I G Capital LLC → Midkiff #1865; 2014-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** H I G Capital LLC → Allied Custom Gypsum; 2014-07-15 to 2013-08-08; source msha-controller-operator-history
- **controller_controls_mine:** H I G Capital LLC → Midkiff #1865; 2015-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** H I G Capital LLC → ACG Materials; 2015-10-01 to 2018-12-05; source msha-controller-operator-history
- **operator_operates_mine:** ACG Materials → Midkiff #1865; 2018-12-06 to 2022-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Arcosa, Inc → Midkiff #1865; 2018-12-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arcosa, Inc → ACG Materials; 2018-12-06 to 2022-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Arcosa Aggregates Texas, LLC → Midkiff #1865; 2023-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Arcosa, Inc → Midkiff #1865; 2023-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arcosa, Inc → Arcosa Aggregates Texas, LLC; 2023-01-01 to current/open; source msha-controller-operator-history