Full text
the principal mineral extracted is silica that is extracted from sandstone or quartzite; (matières minérales ou ressource minérale)
the principal mineral extracted is silica that is extracted from sandstone or quartzite; (matières minérales ou ressource minérale)
the principal mineral extracted is silica that is extracted from sandstone or quartzite; (matières minérales ou ressource minérale)
the principal mineral extracted is silica that is extracted from sandstone or quartzite;