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281
Heroes of the Telegraph
·
John Munro
110
At
present
there
are
several
large
works
engaged
in
manufacturing
the
Siemens-Martin
steel
in
England,
namely,
the
Landore,
the
Parkhead
Forge,
those
of
the
Steel
Company
of
Scotland,
of
Messrs.
Vickers
&
Co.,
Sheffield,
and
others.
These
produced
no
less
than
340,000
tons
of
steel
during
the
year
1881,
and
two
years
later
the
total
output
had
risen
to
half
a
million
tons.
In
1876
the
British
Admiralty
built
two
iron-clads,
the
Mercury
and
Iris,
of
Siemens-Martin
steel,
and
the
experiment
proved
so
satisfactory,
that
this
material
only
is
now
used
in
the
Royal
dockyards
for
the
construction
of
hulls
and
boilers.
Moreover,
the
use
of
it
is
gradually
extending
in
the
mercantile
marine.
Contemporaneous
with
his
development
of
the
open-hearth
process,
William
Siemens
introduced
the
rotary
furnace
for
producing
wrought-iron
direct
from
the
ore
without
the
need
of
puddling.
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