BEGIN:VCALENDAR VERSION:2.0 PRODID:https://www.nabaltec.de/ BEGIN:VEVENT UID:event160920266a84e9646f9ad8.37161801 DTSTART:20260915T220000Z DTEND:20260917T215959Z SUMMARY:ICR - Intern. Colloquium on Refractories END:VEVENT END:VCALENDAR