I did a lot of growing up next to the pit head of the winsford salt mine. My grandma lives in the village of Moulton which the mine is under. If the government had kept the river weaver navigable then salt could be moved north and south on a regular basis. We should have never let the cargo carrying water ways decline. We should go back to using them as soon as we can.
Can't go south from the Weaver, except on the Trent & Mersey canal, & a canal with 72' by 7' manually-operated locks is not an economical means of freight transport. Labour costs are too high.
If, back in the mid-19th century, there had been less of a mania for buying railway shares, so that railway companies had not been so flush with money from share offerings that they hadn't seen the opportunity to buy up suddenly cheap canal companies left right & centre, & neglect their canals, then the canal network might have been modernised enough to remain competitive, & therefore salt could have been shipped in bulk from Cheshire by canal. But sadly, it wasn't, so it can't be.
Or if, back in the early 1960s, Dr. Beeching hadn't so ruthlessly pruned the railways, we might still have railways with the sort of freight capacity to ship salt around the country quickly & cheaply, when wanted. But again . . . .