bleach spot

bleach spot

[′blēch ‚spät]
(geology)
A green or yellow area in red rocks formed by reduction of ferric oxide around an organic particle. Also known as deoxidation sphere.
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If bleach spots are present, the sling/belt should be removed from service immediately.
Resident lift slings: a silent risk? Lift slings can wear out, like any other material item, and the resulting risks are serious--and preventable

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