Knowledge articles

DMM factory tour

An insight into the craftsmanship and story behind the manufacture of DMM products at its Llanberis base in north Wales. See for yourself how throughout every stage of production, starting with the raw material, strict standards of quality control are maintained. Incredible precision even when hundreds of tonnes of force are being used and careful control of the critical variables involved many of the processes, such as heat treatment, are all part of the story.

07 January, 2013

ANSI standards for carabiners

The American National Standard, ANSI /ASSE Z359.12-2009 became effective November 2009. The standard incorporates a minimum gate face and side load requirement for carabiners to meet or exceed 3,600Ib (16kN).

01 December, 2012

Cableway systems in access and rescue

George Smith from Outreach Rescue sheds light on the different types of rigging, the forces involved and considerations to be made when assembling rope systems.


24 October, 2012

Rope rescue work over water

Working on rope rescue systems over water can be very problematic, with multiple risks and limited guidance, then again… it can make for a soft landing!

02 May, 2012

The right tools for the job

Not all connectors are the same and so choosing the right one for the job in hand can be a daunting task. Different shapes, materials and locking mechanisms form a bewildering array of choice. Add in the potential for captive eyes, swivels or pulley variations and the list of options is vast.

12 April, 2012

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