Historic Lead Mine Adit and New Drainage Tunnel 3D Laser Scan Survey

Geoterra was appointed by civil engineers, Walters Group, to carry out an above- and below-ground 3D laser scan survey of a historic lead mine adit (Adit 9) and a newly installed drainage tunnel connecting to the adit. Walters Group... Read more

Type of work: Mining and Minerals, Remote Access Survey, Subsurface Laser Scan Survey

Subsurface Laser Scan and Multibeam Sonar Survey of Former Historical Coal Mine Shaft

Geoterra was contracted by The Coal Authority to survey a partially submerged coal mine shaft in the UK. The survey aimed to assess the structural integrity of the shaft, which had partially collapsed and was filling with water after mine... Read more

Type of work: 3D Laser Scan Survey, HD CCTV Survey, Mining and Minerals, Multibeam Sonar Survey, Remote Access Survey, Subsurface Laser Scan Survey

Aerial photogrammetry survey of 21 underground drainage adits

Folkestone Warren is an area of land prone to landslides. In December 1915, a severe landslip at Folkestone Warren, known as The Great Fall, resulted in train derailments and continued rail movement on the Dover to London South Eastern... Read more

Type of work: Aerial LiDAR Survey, Aerial Ortho-Photogrammetry Survey, Rail, Remote Access Survey

Dunford Bridge Drainage Culvert Survey

Geoterra was appointed by WSP Consultant Engineers to carry out a 3D topographical survey of a confined space drainage culvert that runs directly underneath the Trans Pennine Way at Dunford Bridge in South Yorkshire.

The survey data was required to assess... Read more

Type of work: Aerial Ortho-Photogrammetry Survey, Civil Engineering, Mining and Minerals, Remote Access Survey