 The tunnel was closed upon completion of the new one, and is now partially occupied by several town gas pipelines, operated by The Hong Kong and China Gas Company.The potential for damage to the pipes was a factor in determining the intensity of blasting during construction of the Sha Tin to Central Link, thereby protecting the old tunnel as a whole.As part of the modernisation of the KCR, under reformist Governor Murray MacLehose, a double-tracked, electrified tunnel was built 30 to 40 metres west of the original one.