14.5-km tunnel on China-Laos railway drilled through

China Railway No 5 Engineering Group (CREC-5) drilled through the Ban Konlouang Tunnel, a key bottleneck project of the China-Laos railway, 43 days ahead of schedule.The construction of the 1,000-km railway started in Dec. 2016, is scheduled to be operational by the end of 2021. - Xinhua

BEIJING (Xinhua): A 14.5-km tunnel on the Kunming-Vientiane Railway to link China with Laos has been bored through, the China State Railway Group Co., Ltd. (China Railway) said.

In drilling the Duoji Tunnel, located in Mojiang County in Pu'er City, southwest China's Yunnan Province, construction workers tackled complicated geological conditions, such as the deformation of soft rocks and noxious gas, according to a project manager.