The Historical Land Use report is derived from the physical analysis of over 60,000 Ordnance Survey map sheets at 1:10,000 and 1:10,560 scale, dating from the middle of the nineteenth century to the late twentieth century.
Landmark's analysis has identified over 390,000 features in Britain from which a unique database of industrial and geographical land use has been created.
The Historical Land Use section incorporates features which have been identified from a comparison of two or more map editions. For example it can indicate such features such as quarries and pits which were once in existence but have since been infilled.
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Historical Tanks and Energy Facilities have been identified from text on OS historical maps and categorised into 9 types of information: Tanks, Potential Tanks, Petroleum Storage Facilities, Oil Industry Facilities, Gas Industry Facilities, Gas Monitoring Facilities, Electricity Industry Facilities, Electrical Sub Station Facilities, Miscellaneous Power Facilities.
For this section of the report 1:1250 and 1:2500 scale mapping between 1946 and 1996 has also been analysed.
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