We propose an investigation of the properties of apparent silicate
emission features in the IR spectra of ultra compact HII regions.  With
SWS observations for the first time indications of such features towards
HII region were seen.  The relation of this material to the HII region
is not at all clear.  The proposed observations aim to significantly
improve the signal to noise for these features, allowing a more detailed
study of their properties and relation with the HII regions.