Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
However, soil researchers warn that individual fields need to be analyzed in terms of whether oil shale ash is a good fit for them.
Source: https://news.err.ee/1608863855/enefit-power-looking-to-sell-oil-shale-ash-to-scandinavia
There are 18 mining areas in Estonia with valid environmental permits for the extraction of oil shale.
Witch's wells remove excess floodwater from farmland or, in the case of some constructions in Ida-Viru County, from abandoned oil shale mines.
Source: https://news.err.ee/1608854252/tuhala-witch-s-well-already-overflowing