It is understood that overall production has been as low as 13 cwts output per manshift
compared with the coalfield output of 29 cwts.
In one week in September they produced 35,000 tonnes of saleable coal, each manshift
producing 4.62 tonnes, but in which year?
It was a fortnight since 570 men at the pit broke a 13-year-old record with return of 58.6 cwts a manshift
when they did it again with a figure of 65 cwts.
The Production Efficiency Award was presented to each mine or colliery that increased their fresh mined output per manshift
by 10% or more.
The Trelewis drift mine set a South Wales record of 188.4 cwt per manshift
Despite the problems caused by the adjustment in capacity, productivity, as in the previous year, again rose by some 7%, reaching 6.66 mt salable per manshift
Although productivity has risen proportionately, it was still only 5.31 mt per manshift
Reducing the number of operators required, and raising their output per manshift
can greatly improve the economics of underground mining.
Thus, reducing the number of operators required, and raising their output per manshift
will greatly improve the economics of the operations.
Productivity bonuses are usually tied to the tons of product per manshift
for the mine or for some part of the mine compared to a targeted goal.
Average output of raw coal per employee was under 163 t in 1993 and in state mines, output per manshift
in 1992 was estimated at just 1.33 t.
The mine employs a workforce of 1,600 and output per manshift
is 6.86 t.