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Plasma with a temperature close to the chromospheric one is ejected in solareruptions. Such plasma can occult some part of emission of compact sources inactive regions as well as quiet solar areas. Absorption phenomena can beobserved in the microwave range as the so-called 'negative bursts' and also inthe He II 304 A line. The paper considers three eruptive events associated withrather powerful flares. Parameters of absorbing material of an eruption areestimated from multi-frequency records of a 'negative burst' in one event.'Destruction' of an eruptive filament and its dispersion like a cloud over ahuge area observed as a giant depression of the 304 A line emission has beenrevealed in a few events. One such event out of three ones known to us isconsidered in this paper. Another event is a possibility.

Solar flare-related eruptions followed by long-lasting occultation of the emission in the He II 304 A line and in microwaves