Tan Ky Mineral Processing Joint Stock Company currently owns a high quality limestone quarry in Eo Cat area, Tan Xuan commune, Tan Ky district, Nghe An province under the Mining License No. 59 / GP. -BTNMT licensed by the Ministry of Natural Resources and Environment on March 17, 2015 as follows:

1. Mining area: 24.56 ha
2. Depth of exploitation: up to + 120m
3. Geological reserves:

- Marble for making mable slab/ tiles: 1,174,218 m3

- Marble to make calcium carbonate powder: 7,689,464 tons

4. Exploitation reserve:

- Marble for making paving: 1,068,540 m3

- Marble makes calcium carbonate powder: 6,997,403 tons

5. Mining capacity

- Phase 1 (from year 1 to year 5)

+ Marble for making slab/ tiles: from 7,566 to 29,040 m3 / year

+ Marble for making calcium carbonate powder: from 49,542 to 190,172 tons / year

- Phase 2 (from the 6th year onwards)

+ Marble for making paving: from 30..492 to 43,560 m3 / year

+ Marble for making calcium carbonate powder: from 199,682 to 285,259 tons / year

Duration of exploitation: 30 years