An interesting engine from an interesting railway. The idea of a double track main line for coal across the Lincolnshire Wolds terminating at a new coal port at Sutton on Sea is also "interesting" (the one railway that attempted to tackle the Wolds - the Louth and Lincoln - had a ruling gradient of 1 in 70) . Contemplating the engineering obstacles of skirting Lincoln, crossing the Witham and assaulting the Wolds, one begins to see exactly why the LD&EC stopped where it did
There was an article with drawings in the Railway Modeller (I think) about 25 years ago. Apparently the key factor driving the order was water and coal capacity - the LD&EC had running powers from Lincoln to Grimsby, but the 0-6-2Ts couldn't make it that far without a stop for refreshment at Lincoln. The issue will have disappeared as soon as the GC took over - they had enough Robinson 0-6-0, 0-8-0 and 2-8-0 locos to do the job
There was also a glorious quote cited from the contemporary magazine The Engineer - "a long-time sceptic in matters LD&EC" - reporting the order : "This railway doubtless requires a new type of engine. We think it requires a new type of management rather more."
They lasted well - the final survivor went 5 months short of Nationalisation as class M1 (Class M2 was the Met 0-6-4Ts)