61 blasts since #2010 which "can be caused by an #electrical fault, often when #water has seeped into cables, or by a #gas leak which has been ignited by a spark underground" and #London has about "36,000km of underground cable" and "4 teams of UK Power Networks were inspecting about 80 cable pits every day" cc @question

61 blasts since #2010 which "can be caused by an #electrical fault, often when #water has seeped into cables, or by a #gas leak which has been ignited by a spark underground" and #London has about "36,000km of underground cable" and "4 teams of UK Power Networks were inspecting about 80 cable pits every day" cc @question