I have been reading G.J. Cooper’s “Titanic Captain;” He states that the Olympic needed 4000 tons of coal for her maiden voyage and this was supplied by the barges of R & G.H. Rea. The loading took 15 minutes a world record for 1911; I assume this was a misprint and should have read 15 hours. That is in excess of 266 tons per hour and the ship would have needed to be moved to allow loading from both sides. Looking round the net it seems elevators were used, if the usual one hundred weight (cwt/ 112lbs) bags were used that’s 80,000 bags. If the coal was loose that is still a lot of shovelling to get the coal on to the elevators.
The steam locomotives on the east coast travelling between London and Edinburgh had a tunnel in the tender for changing the crew because it was physically impossible for a fireman to keep up with the required stoking. There would be less than 10 tons of coal in the tender. I would regularly see a Bournemouth to Manchester steam train pass through at 60/70 mph. with the fireman shovelling furiously. Hard to grasp that 4000 tons of coal were loaded onto a steam ship.
There was a colliery near where I lived that had 30 feet thick coal seams, columns of coal were left to support the roof. The mine was notorious for underground fires in these columns due to spontaneous combustion caused by the coal being under pressure. I would say that this was the cause of the fire in the Titanic’s bunker; the reasons given, the coal being wet and containing iron, doesn’t make much sense to me. This was always a concern of my father when stacking up our coal shed, when I was a child.