[log in to unmask] wrote:
> On 27 Sep 00, at 21:05, Peter James Challis wrote:
>
> >
> >
> > Clement Le Neve Foster, Metalliferous Mines Inspector for Wales &
> > the Isle of Man et al (amongst other claims to fame) wrote on the
> > subject of iron supports for the Halkyn Drainage Tunnel in 1887. He
> > also wrote of the use of steel supports in his Annual Report of 1891,
> > advocating their use in the Foxdale Mine.
>
> Are you sure that the supports in question are steel, or cast iron?
> Extensive parts of the Halykyn Deep drainage tunnel roof is
> supported by cast iron columns, bearing steel crossbeams, and very
> effective they are, too, Although not particularly effective against
> side pressure, which has broken one or two, they seem to be
> 'bearing up well'.
>
> Rod Goslin
PC replies,
I assume he probably meant cast iron, given your remarks.
>
>
> If GOD had intended Man to :
> travel at more than 50 mph : Regards
> HE would have given the :
> Land Rover a larger engine. : Rod Goslin
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