Grace's Guide To British Industrial History

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Steetley Magnesite Co: Difference between revisions

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Magnesite (magnesium carbonate) had been identified as an important
Magnesite (magnesium carbonate) was an important refractory raw material but not available in Britain from natural deposits.
refractory raw material and, in the absence of any native source of natural
magnesite,


[[Steetley|Steetley Co]] spent a number of years developing a stabilised dolomite
[[Steetley]] spent a number of years developing a stabilised dolomite brick as a substitute for magnesite refractories. Commercial production began in 1937 and concurrently Steetley made a major effort in research and development to produce magnesia from seawater and dolomite.
brick as a substitute for magnesite refractories. Commercial production
of such dolomite bricks began in 1937 and concurrently Steetley made a
major effort in research and development to produce magnesia from sea-
water and dolomite.


1937 Steetley set up a subsidiary company to operate a seawater magnesia
1937 Steetley set up a subsidiary company to operate a seawater magnesia plant at Hartlepool  
plant at Hartlepool  


1940 Another plant was built for the Government at Harrington in Cumberland.  
1940 Another plant was built for the Government at Harrington in Cumberland.  


Steetley emerged from the Second
Steetley emerged from the Second World War as a leading producer of dolomite and magnesia and of refractories using these two materials. It continued to expand in this field in close collaboration with the steel industry during the 1950s and 1960s, acquiring similar dolomite interests in Canada in 1952.
World War as a leading producer of dolomite and magnesia and of refrac-
tories using these two materials. It continued to expand in this field in
close collaboration with the steel industry during the 1950s and 1960s,
acquiring similar dolomite interests in Canada in 1952.
4.5. Changing processes in steel-making created a demand for high purity
magnesia which could not then be produced from dolomite and in 1963-64
Steetley became a partner in a scheme to produce such magnesia from sea-
water and high purity limestone which was available near the sea in Sardinia.
4.6. Disposal of dolomite unsuitable for refractory use as road stone
and fill gave Steetley an interest in construction materials, which it extended
in 1964 by the acquisition of Alan S Denniff Ltd, whose principal business
was ready-mixed concrete, and Jas Turner and Son Ltd who produced
aggregates, mainly sand and gravel. In 1969 Steetley took over Dowlow
Lime and Stone Company Ltd and moved into the market for limestone
for purposes unrelated to the containment of heat. Concurrently it diversi-
fied into the distribution of industrial and electrical supplies in Canada


1952 Company incorporated
1952 Company incorporated
Changing processes in steel-making created a demand for high purity magnesia which could not then be produced from dolomite and in 1963-64 Steetley became a partner in a scheme to produce such magnesia from seawater and high purity limestone which was available near the sea in Sardinia.


1978 Renamed [[Steetley Construction Materials]] Ltd
1978 Renamed [[Steetley Construction Materials]] Ltd

Latest revision as of 13:41, 4 April 2024

Magnesite (magnesium carbonate) was an important refractory raw material but not available in Britain from natural deposits.

Steetley spent a number of years developing a stabilised dolomite brick as a substitute for magnesite refractories. Commercial production began in 1937 and concurrently Steetley made a major effort in research and development to produce magnesia from seawater and dolomite.

1937 Steetley set up a subsidiary company to operate a seawater magnesia plant at Hartlepool

1940 Another plant was built for the Government at Harrington in Cumberland.

Steetley emerged from the Second World War as a leading producer of dolomite and magnesia and of refractories using these two materials. It continued to expand in this field in close collaboration with the steel industry during the 1950s and 1960s, acquiring similar dolomite interests in Canada in 1952.

1952 Company incorporated

Changing processes in steel-making created a demand for high purity magnesia which could not then be produced from dolomite and in 1963-64 Steetley became a partner in a scheme to produce such magnesia from seawater and high purity limestone which was available near the sea in Sardinia.

1978 Renamed Steetley Construction Materials Ltd

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