# Relationship history for MSHA mine 1514295

Current hierarchy: **Lanham Roy → Bo Coal Company → #1 Mine**

- 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:** Spade Coal Company → #1 Mine; 1983-10-01 to 1984-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Mc Neil Dearl-Mary Burnette Et Al → #1 Mine; 1983-10-01 to 1984-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Mc Neil Dearl-Mary Burnette Et Al → Spade Coal Company; 1983-10-01 to 1984-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Kensee Mining → #1 Mine; 1984-03-15 to 1984-06-05; source msha-controller-operator-history
- **controller_controls_mine:** Bargo Denver & Henry Wilson → #1 Mine; 1984-03-15 to 1984-06-05; source msha-controller-operator-history
- **controller_controls_operator:** Bargo Denver & Henry Wilson → Kensee Mining; 1984-03-15 to 1984-06-05; source msha-controller-operator-history
- **operator_operates_mine:** Jerah Mining Company Inc → #1 Mine; 1984-06-06 to 1985-04-17; source msha-controller-operator-history
- **controller_controls_mine:** Hall Richard G → #1 Mine; 1984-06-06 to 1985-04-17; source msha-controller-operator-history
- **controller_controls_operator:** Hall Richard G → Jerah Mining Company Inc; 1984-06-06 to 1985-04-17; source msha-controller-operator-history
- **operator_operates_mine:** Big Fannie Coal Company → #1 Mine; 1985-04-18 to 1986-02-23; source msha-controller-operator-history
- **controller_controls_mine:** Bargo Denver & Fannie Syck → #1 Mine; 1985-04-18 to 1986-02-23; source msha-controller-operator-history
- **controller_controls_operator:** Bargo Denver & Fannie Syck → Big Fannie Coal Company; 1985-04-18 to 1986-02-23; source msha-controller-operator-history
- **controller_controls_mine:** Lane John Jr-Jomax Et Al → #1 Mine; 1986-01-01 to 1987-04-02; source msha-controller-operator-history
- **operator_operates_mine:** R & N Coal → #1 Mine; 1986-02-24 to 1986-06-01; source msha-controller-operator-history
- **controller_controls_mine:** Leach Jerry--Randle Hill Et Al → #1 Mine; 1986-02-24 to 1986-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Leach Jerry--Randle Hill Et Al → R & N Coal; 1986-02-24 to 1986-06-01; source msha-controller-operator-history
- **operator_operates_mine:** Blue Ridge Coal Company → #1 Mine; 1986-06-02 to 1986-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Lane John Jr-Jomax Et Al → Blue Ridge Coal Company; 1986-06-02 to 1986-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Krystal Coal Company → #1 Mine; 1986-11-01 to 1987-10-28; source msha-controller-operator-history
- **controller_controls_mine:** Patterson Charles Et Al → #1 Mine; 1986-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patterson Charles Et Al → Krystal Coal Company; 1986-11-01 to 1987-10-28; source msha-controller-operator-history
- **operator_operates_mine:** Eagle Mining Company → #1 Mine; 1987-10-29 to 1989-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Lanham Alonzo → #1 Mine; 1987-10-29 to 1989-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Lanham Alonzo → Eagle Mining Company; 1987-10-29 to 1989-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Bo Coal Company → #1 Mine; 1989-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lanham Roy Et Al → #1 Mine; 1989-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lanham Roy Et Al → Bo Coal Company; 1989-03-15 to current/open; source msha-controller-operator-history