Quick answer
The mine is a surface mine.[1] It produced lignite coal, and EIA places it in the Other Interior coal supply region.[1] Mines in the county produced 1,789,791 short tons in 2023, so output fell by about 11 percent in 2024.[1]
| Mine | Type | Coal rank | Short tons, 2024 |
|---|---|---|---|
| San Miguel Lignite Mine | Surface | Lignite | 1,596,122 |
Source: U.S. Energy Information Administration, Annual Coal Report mine-level data for 2024, released November 19, 2025. Data compiled November 1, 2026.
Surface mining is often used when coal is less than 200 feet underground, and underground mining is used when coal lies deeper.[2] The coal leases in a 2020 West Virginia Supreme Court of Appeals decision carried a tonnage royalty, a minimum annual royalty and a fixed term of years.[3] Texas is one of the 24 states with an approved coal regulatory program, so the state is the primary regulator of coal mining there and handles permitting, inspection and enforcement, with oversight from the federal Office of Surface Mining Reclamation and Enforcement.[4]
Lignite was produced in five states in 2022, led by North Dakota and Texas, with smaller amounts from Mississippi, Louisiana and Montana.[5]
What Buckhead buys depends on the deal, and Buckhead tells the seller up front which interest it is offering to buy — for example, the payments for the rest of the current lease term, a term easement, or a longer-term interest. The coal leases in a 2020 West Virginia Supreme Court of Appeals decision carried a tonnage royalty, a minimum annual royalty and a fixed term of years.[3] Coal rights can also be divided by seam: in one West Virginia case, the leases covered all the coal in all seams above a named seam on the leased tracts.[3]
Educational information only — not legal, tax, or investment advice. The figures are public reference data, not a valuation or appraisal of any interest. Consult a qualified attorney, CPA, or landman about your specific situation.
Atascosa County, Texas had one producing coal mine in 2024, which produced 1,596,122 short tons of coal, according to mine-level data in the U.S. Energy Information Administration's Annual Coal Report for 2024.[1] Mines in the county produced 1,789,791 short tons in 2023, so output fell by about 11 percent in 2024.[1]
The mine was San Miguel Lignite Mine (surface, 1,596,122 short tons).[1]
Buckhead Energy buys coal mineral rights and coal royalties. What Buckhead buys depends on the deal, and Buckhead tells the seller up front which interest it is offering to buy — for example, the payments for the rest of the current lease term, a term easement, or a longer-term interest.
The mine is a surface mine.[1] Surface mining is often used when coal is less than 200 feet underground, and underground mining is used when coal lies deeper.[2]
Texas is one of the 24 states with an approved coal regulatory program, so the state is the primary regulator of coal mining there and handles permitting, inspection and enforcement, with oversight from the federal Office of Surface Mining Reclamation and Enforcement.[4]
Nearby Texas counties with producing coal mines include Robertson County (1,783,404 short tons in 2024) and Limestone County (8,916,988 short tons in 2024).[1]
Coal Mineral Rights and Royalties in Texas
Selling Coal Mineral Rights and Coal Royalties
Oil and gas mineral rights in Atascosa County, Texas
[1] Annual Coal Report, mine-level production (2024 data, released November 19, 2025) — U.S. Energy Information Administration (accessed November 1, 2026)
[2] Coal explained: Coal mining and transportation — U.S. Energy Information Administration (accessed November 1, 2026)
[3] Iaeger Energy Development, LLC v. Moore, No. 18-0409 (memorandum decision, Jan. 13, 2020) — Supreme Court of Appeals of West Virginia (accessed November 1, 2026)
[4] Regulating Active Coal Mines — Office of Surface Mining Reclamation and Enforcement (accessed November 1, 2026)
[5] Coal explained — U.S. Energy Information Administration (accessed November 1, 2026)
Buckhead Energy buys coal mineral rights and coal royalties.
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