You can get those same contaminates carbon monoxide, hydrogen and hydrogen sulphide from Urea/Ammonia Nitrate. The feedstock for these products in syngas.
Around 2008 some farmers were bragging about the cheap Fertiliser they imported themselves from India. Some of it was high in contaminates, broke down and turned into a solid lump with any heat and was poor crop nutrient. Wondering if the local farmers are to blame with dodgy Super.
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