Shale oil extraction Energy estimates that the "ex-situ" processing would be economic at sustained average world oil prices above $54 per barrel and "in-situ" processing would be economic at prices above $35 per barrel. These estimates assume a return rate of 15%. Royal Dutch Shell announced in 2006 that its Shell ICP technology would realize a profit when crude oil prices are higher than $30 per barrel ($190/m), while some technologies at full-scale production assert profitability at oil prices even lower than $20 per barrel ($130/m). To increase the efficiency of oil shale retorting and by this the viability of the shale oil
Imperial Oil Building noisier riveting technique. The building, on completion, was the largest all-welded steel frame building in the world. When Imperial Oil assembled the residential properties for the site, Isabel Massie, owner of a house at 59 Foxbar Road, on a long angular lot at the rear of the site, refused to sell, despite being offered up to $100,000 for her house, at the time a princely sum. As a result, Imperial Oil had to move its building closer to St. Clair Avenue than planned. Until she died in 1964, her property jutted into the Imperial Oil parking lot, an icon of