BEGIN:VCALENDAR VERSION:2.0 PRODID:https://www.nabaltec.de/ BEGIN:VEVENT UID:event1609202669da0c1c9eab56.07221015 DTSTART:20260915T220000Z DTEND:20260917T215959Z SUMMARY:ICR - Intern. Colloquium on Refractories END:VEVENT END:VCALENDAR