i--nab bonisa, eyabanjelwa ngo--ephreli 6 -- 11, 2019, elas vegas, env, eu.sa, ngumhlangano omkhulu kunazo zonke emhlabeni wonke ohlanganisa ukuxhumana, ukuzijabulisa kanye nobuchwepheshe. ngabantu abangaba ngu--100,000 abavela emazweni we--165 nama--1,700 + umbukiso, i--nab bonisa iyindawo emakethe yokugcina yezixazululo ezidlula ukusabalalisa kwendabuko futhi zithuthukisa umnotho wezokuxhumana nge--digital. ukusuka ekudalweni kuya ekusetshenzisweni, kuwo wonke amapulatifomu amaningi kanye nezizwe ezingenakubalwa, i--nab bonisa yilapho ababukeli bezwe bomhlaba bahlangana ukuze balethe okuqukethwe kokuphila ngezindlela ezintsha nezithakazelisayo. General The Company's natural gas distribution operations consist of Montana-Dakota, Great Plains, Cascade and Intermountain, which sell natural gas at retail, serving 938,867 residential, commercial and industrial customers in 335 communities and adjacent rural areas across eight states as of December 31, 2017, and provide natural gas transportation services to certain customers on the Company's systems. For more information on the retail customer classes served, see the table below. These services are provided through distribution systems aggregating approximately 19,600 miles. The natural gas distribution operations have obtained and hold, or are in the process of renewing, valid and existing franchises authorizing them to conduct their natural gas operations in all of the municipalities they serve where such franchises are required. These operations intend to protect their service areas and seek renewal of all expiring franchises. At December 31, 2017, the natural gas distribution operations' net natural gas distribution plant investment was $1.5 billion, and rate base was $975 million.