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
Pickle Barrel House $125,000 (equivalent to $ in ) in expenses the renovated Pickle Barrel House was opened to the public. The barrel house now shows how the Donaheys lived there in their summer cottage in the woods by the lake in the 1920s and 1930s. The barrel house museum has old pictures of the Donaheys in their one-of-a-kind pickle barrel cottage. Some of these old photos of the 1920s even show the "curiosity visitors" at their cottage in the woods. In the museum also are several books and other materials on William Donahey and his children's Teenie Weenies. One room alone showcases