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Newbeehunter
Hi all can you identify please, first one full of holes smells strongly of rotten eggs when scratched approximately 4 inches, bigger one holes in one end no smell approx 7 inches,  both none magnetic, I'm finding lots of material like this but different colours
thank you 

20200909_122344.jpg 
20200909_122331.jpg 20200904_105756.jpg 20200904_105904.jpg Click image for larger version - Name: 20200909_122347.jpg, Views: 8, Size: 347.55 KB
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Dirty Pete
More industrial waste/slag maybe from coal gas production/purification processes. Potentially some nasty stuff in there.........

2.2.2 Major contaminants
Major contaminants associated with gasworks wastes are: metals (including metalloids), volatile (or
monocyclic) aromatic hydrocarbons, phenolic compounds and polycyclic aromatic hydrocarbons
(PAHs) — see Table 3
Natural degradation processes can cause concentrations of some of these chemicals to diminish over
time, provided that conditions are suitable. These chemicals may include phenolic compounds, volatile
monocyclic aromatic hydrocarbons and some PAHs.
Degradation rates can be extremely slow in the subsurface environment, however, and high
concentrations of some contaminants may persist for many years.
Some contaminants are not broken down by biodegradation. For example, heavy metals and complex
cyanides will remain in the soil unless they are leached out.

Table 3: Principal chemicals of interest at gasworks sites3
Inorganic
Compounds
Metals &
Metalloids
Monocyclic Aromatic
Hydrocarbons (MAHs)
Phenolics Polycyclic Aromatic
Hydrocarbons (PAHs)4
Ammonia
Cyanide
Nitrate
Sulfate
Sulfide
Thiocyanate
Aluminium
Antimony
Arsenic
Barium
Cadmium
Chromium
Copper
Iron
Lead
Manganese
Mercury
Nickel
Selenium
Silver
Vanadium
Zinc
Benzene
Ethyl benzene
Toluene
Total Xylenes
Phenol
2-Methylphenol
4-Methylphenol
2,4-Dimethylphenol
Acenaphthene
Acenaphthylene
Anthracene
Benzo(a)anthracene
Benzo(a)pyrene
Benzo(b)fluoranthene
Benzo(g,h,I)perylene
Benzo(k)fluoranthene
Chrysene
Dibenzo(a,h)anthracene
Fluoranthene
Fluorene
Naphthalene
Phenanthrene
Pyrene
Indeno (1,2,3-cd) pyrene


Pete
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Newbeehunter
Wow thank you theres a 50ft hole back it goes thank you 
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Newbeehunter
Hi sorry to be a pain Is this the Same nasty slag holes look different Crystal's on one side but still smells, if so will avoid anything with holes,  thankyou Click image for larger version - Name: 20200910_175153.jpg, Views: 3, Size: 307.09 KB Click image for larger version - Name: 20200910_174633.jpg, Views: 3, Size: 357.65 KB Click image for larger version - Name: 20200910_174605.jpg, Views: 3, Size: 494.25 KB
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Dirty Pete
Anything with holes in as in your pics has been melted in an industrial process and the gasses generated have become trapped on cooling creating the bubbles. The bad smell is probably hydrogen sulphide gas which is heavier than air and deadly in low concentrations. 

Pete.
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Newbeehunter
Thank you Pete as always your a star much appreciated it's amazing the knowledge I'd like to say one day lol I'll help others but damned that seems life time away 
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