Ann: March Quarterly Activities Report Presentation, page-15

In their March 2018 Quarterly Report Update Direct Event conference call today a direct question was asked about this.
Response was that figures were being capitalised until commercial production.

My understanding of commercial production for a mining company is when mineral recoveries are at or near their expected production levels.
As a non shareholder you may not have listened to the broadcast .
This link does not have a live audio however, check again tomorrow http://www.syrahresources.com.au/march-8018-quarterly-activites-and-cashflow-report
Well worth listening to and it does cover the spherical graphite situation, in Vidalia Louisana to.