Ha Lam Coal Joint Stock Company, Ha Lam ward (old Ha Long city) is one of the leading units in the journey to conquer the deep coal layers of Vietnam National Coal - Mineral Industries Group (TKV).
In 2009, the company opened a project road below -50m with a system of 3 wells standing down to -300m, becoming the deepest mining mine at that time. The two mechanical markets with a capacity of 600,000 tons/year and 1.2 million tons/year have helped the company maintain output for 16 years.
However, the exploitation area at -300m is increasingly narrowing, forcing Ha Lam Coal to continue digging the furnace to -550m.
Currently, the company is simultaneously maintaining production at -300m and speeding up the excavation progress to -550m to expand the exploitation area. According to the company representative, in the coming time, the company will deploy digging of leaning kilns to -550m, creating a new production area to ensure stable output and aiming to achieve a mine capacity of 2.4 million tons/year.
According to the plan, the mine roads to -550m will be completed and the first ton of coal will be released in 2029. In the period of 2029-2038, the Company will maintain a stable capacity of inland mines, creating a foundation for sustainable and long-term development in conditions of increasingly deep exploitation.
Not far from Ha Lam coal mine, Nui Beo Coal Joint Stock Company is the first unit of TKV to completely convert from open-pit mining to underground. The 2 million tons/year underpass project started in 2012 with a total investment of VND 5,300 billion.
Since 2021, Nui Beo Coal has fully operated the tunnel and continuously increased output. In 2024, the company exploited 1.63 million tons; in just 10 months of 2025, it reached 1.65 million tons and is expected to reach 2 million tons for the first time by the end of the year - corresponding to the designed capacity of the mine.
To expand the exploitation area, a representative of Nui Beo Coal Joint Stock Company said that the unit is speeding up the excavation to -500m and completing the light-class mechanical system, aiming to become one of the deepest mines of the group.
Meanwhile, the Khe Cham II-IV tunnel project of Ha Long Coal Company, Mong Duong ward (old Cam Pha city), is considered one of TKV's key projects, with a total investment of over VND 12,500 billion; reserve of over 82.5 million tons; designed capacity of 3.5 million tons/year.
The project opens the mine with 3 vertical wells, in which the main well is dug from +35/500m with a depth of 535m; the secondary well is from +35/500m with a depth of 570m. By the end of August 2025, the entire project had dug over 35,800 meters of kilns, put 8/14 markets into operation and completed many ground works, power stations, wastewater treatment, and vertical well frame systems.
Mr. Pham Duy Hung - Director of Ha Long Coal Company - said that the unit has exploited part of the field at a depth of -500m and is speeding up the excavation of the furnace, completing the excavation of the furnace to build the barrier before December 31, 2026 to install equipment.
Many other mines of TKV, such as Mao Khe, Vang Danh... are also expanding their exploitation to below -150m to -175m.
However, going deeper will increase production costs, requiring more complex techniques and technologies.
