It was recognized as some use aiding other fuels .
Pack animal loads occasionally reached the city , which had mills and foundries desperately needing to circumvent the British Naval Blockade , so Bituminous Coal coastal shipments up from Virginia might resume .
It was recognized as some use aiding other fuels , and pack animal loads occasionally reached the city , which had mills and foundries desperately needing to circumvent the British Naval Blockade , so Bituminous Coal coastal shipments up from Virginia might resume .