On 09-Sep-17 9:44 AM, Ignoramus21254 wrote:
Some of my clothes, not surprisingly, have dark spots from used oil
and carbon. I am not sure if it is the oil itself, or the carbon works
as a dye, but they do NOT clean up with regular clothes detergent. I
want to clean them out properly.

Would anyone have a suggestion as to what to do with these dark stains.
....

In a former life I did training and field calibration/support for our
online coal analyzers and consequently spent a fair amount of time at
mines, prep plants and loadout stations plus the occasional power plant.
There's essentially nothing that attacks elemental carbon; and if the
clothing has already been washed once it's black from now on.

I turned in a few rental cars that didn't look very pristine after a
trip to the mines in E KY; I don't think I ever was on a service call
there that it didn't rain on me besides all the rest...what I really,
really loved (not) was that we only got access to the beltline after the
gob shifts finished their night's work so normally it was 2AM or so
before could even start a set of calibration runs (which consisted of
placing a set of coal samples of known ash content under the detector
head and measuring the response then building a calibration curve)...

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