First, regarding the political leaning of the group that brought this story to our attention, our article makes clear its left-wing origins, the controversial nature of its earlier claims, and its political agenda. Second, regarding whether Koch would benefit from the construction of the Keystone XL pipeline, we make clear that many of Koch’s leases pre-date the pipeline plan, that Koch has not bid for space in the pipeline, and that Koch would not be a customer. Third, if Koch’s lease holdings are 1.1 million acres, that would make it one of the region’s largest, rivaled only by Shell (1 million net acres through an Athabasca joint venture and perhaps 1.3 million net acres altogether), Cenovus Energy (1.5 million net acres), and perhaps Canadian Natural Resources (717,000 net undeveloped acres plus an undetermined number of developed acres). Shell declined to release its total acreage figures. If Koch's lease holdings are “closer to two million,” as has been said by industry sources we consider highly authoritative, then Koch is indeed the largest lease holder in the province.