The dataset contains point load test data of salt samples collected from the Northwich Halite Member at the Winsford Mine in Cheshire, UK. Each sample was tested in an unconfined state using a point load testing apparatus, in which compressive force was applied through two opposing conical platens until failure occurred. All tests were conducted in the Rock Mechanics and Physics Laboratory at the British Geological Survey, Keyworth, UK. The dataset is compiled into a single Microsoft Excel file, with each row representing an individual test. For each test, measurements of sample length, diameter, and peak load are provided, along with calculated point load strength indices and estimates of unconfined compressive strength.

The dataset contains unconfined compressive strength data of salt samples collected from the Northwich Halite Member at the Winsford Mine in Cheshire, UK. Each sample was unconfined and deformed under standard uniaxial stress conditions, where the primary principal stress corresponds to the axial stress and the intermediate and minimum principal stresses are equal to 0. Each sample was axially compressed using either a constant strain rate of 1e-5 per second or a constant loading rate of 200 N/s. The tests were completed using a servo-controlled stiff load frame in the Rock Mechanics and Physics Laboratory at the British Geological Survey, Keyworth UK. The data are separated into individual Microsoft Excel files, with each file representing a single test. Each file contains time, force, stress, displacement, and strain data.

The dataset contains indirect tensile strength data of salt samples collected from the Northwich Halite Member at the Winsford Mine in Cheshire, UK. Each sample was unconfined and deformed under uniaxial compression, where the primary principal stress corresponds to the axial stress and the intermediate and minimum principal stresses are equal to 0. Each sample was deformed using a constant loading rate of 200 N/s. The tests were completed using a servo-controlled stiff load frame equipped with an indirect tension fixture in the Rock Mechanics and Physics Laboratory at the British Geological Survey, Keyworth UK. The data are separated into individual Microsoft Excel files, with each file representing a single test. Each file contains time, axial force, axial displacement, and tensile stress data.

The dataset contains triaxial compressive strength data of salt samples collected from the Northwich Halite Member at the Winsford Mine in Cheshire, UK. Each sample was subjected to varying strain or displacement-equivalent rates under conventional triaxial stress conditions to evaluate its mechanical response to different loading conditions. The experiments were conducted over two testing campaigns between July 2022 and August 2023, using a servo-controlled stiff load frame in the Rock Mechanics and Physics Laboratory at the British Geological Survey, Keyworth, UK. The dataset is organized into individual Microsoft Excel files, each corresponding to a single test and containing parameters such as time, force, stress, displacement, and strain. A summary file detailing sample characteristics and test conditions is also included.

**NO LONGER EXISTS**Data detailing the distribution and severity of dissolution (karst) features throughout the UK. The data is stored locally as ArcView shape files with associated database information detailing the severity of the karst geohazards ranked from 1-5. The dataset is under construction, but will eventually cover the karst geohazards related to Limestone, Chalk, Gypsum and Salt. Consistent data, but some variability depening on the age of the source digital maps.