Thanks to CNCC Technical Group for information supplied.
The anchor scheme came about in early 1990, as a need was identified by the CNCC, to replace spit anchors that where either failing or whose life looked to be short, and would require replacement.
The issue with replacement of the spit anchors, was the proliferation of spits when older ones had passed their useful life, this issue affected the placement in both good rock and also quality of rope hang from the new positions. To this end the CNCC with the backing of the National Caving Association (Now BCA), started a program of research into suitable anchors, resins, and establishing best practices for the installation of the anchors.
The Anchor scheme, undertakes to train installers of anchors, to log all installations, and to provide insurance for all registered installers, and the anchors they have placed.
For further information click on the links below