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News Entry# 435158
Jan 26 2021 (19:06) Folded drones may help Network Rail investigate its railway caves (www.railtech.com)
*technology
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News Entry# 435158   
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Mapping the unpredictable undulations of underground voids and searching out subterranean subsidence is a hidden but vital part of railway maintenance. Now engineers are auditioning a...
read more... Folded drones may help Network Rail investigate its railway caves
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