Singapore: Cloud backup firm DropMySite pursues reverse takeover deal with ASX-listed Excalibur Mining Visual of DropMySite homepage, January 2016. Shiwen Yap January 29, 2016 PremiumSingapore-based cloud backup company DropMySite is in the middle of a reverse takeover deal with ASX-listed Excalibur Mining Corporation, enabling the firm to pursue a backdoor listing. Continue reading this story with a subscription to DealStreetAsia. Subscribe Already a subscriber? Log in Should your colleagues be reading this article too? Contact us for corporate subscriptions at firstname.lastname@example.org.