The farmers may also struggle to find other bulk items, such as fertiliser, that are typically shipped by barge.
And if ethanol can be made cheaply from cellulose, then so can a lot of other bulk chemicals.
Several officials also said more than one other bulk collection program has yet to come to light.
But, at the same time, trade in food and other bulk goods was matched by long-distance commerce in luxuries.
Many of them pay full retail prices because they do not get the large discounts offered to health maintenance organizations, hospitals and other bulk purchasers of prescription drugs.
EWS moves more than 700m tonnes of freight each year, and runs some 7,000 trains each week, carring mail and parcels, cars, and other bulk traffic.
The waterways of the Great Lakes carry tremendous tonnage of ores and other bulk materials, such as stone and sand, coal, cement, and wheat.
"We're basically looking at and reviewing one final source of information to see if there's anything that ties into, relates to, the other bulk of material we've been digesting," said Mr. Fox, a Democrat from Stamford.
The new rules mandate that all new apartments are a minimum of 1,200 square feet, and that no new eating and drinking establishments are allowed, among other bulk and height limits.
Rocks of other bulk compositions may retain some hydrous minerals, such as biotite and hornblende, but it is likely that water pressure is lower than lithostatic pressure during most granulite facies metamorphism.
May revealed that the use of these powers – which show that GCHQ was also engaged in mass surveillance programmes on British citizens using their communications data – under the 1984 Telecommunications Act will be put on a more explicit footing in the new legislation and be subject to the same safeguards as other bulk powers.
