http://www.ogj.com/articles/2013/05/plains-all-american-to-build-w--oklahoma-oil-line-extension.html http://www.ogj.com/articles/2013/05/tc-pipelines-to-increase-stake-in-gtn--bison-systems.html http://www.ogj.com/articles/print/volume-111/issue-5a/regular-features/ogj-newsletter.html http://www.ogj.com/articles/2013/05/millennium-gauges-interest-in-new-york-pipeline-expansion.html http://www.ogj.com/articles/print/volume-111/issue-5/regular-features/services-suppliers.html http://www.ogj.com/articles/print/volume-111/issue-5/special-report-worldwide-construction/survey-shows-increase-in-refining.html http://www.ogj.com/articles/print/volume-111/issue-5/regular-features/ogj-newsletter.html http://www.ogj.com/articles/print/volume-111/issue-5/general-interest/transcanada-delays-keystone-xl-in-service.html http://www.ogj.com/articles/2013/05/transcanada-to-build-alberta-crude-line--terminal.html http://www.ogj.com/articles/2013/04/more-pipeline-outlets-seen-crucial-to-canadian-oil-producers.html