For those who haven't opened the link provided by Wayne, it relates to

"HRV Stewards ordered the scratching of the horse Carload from its scheduled engagement in Race 1 at Melton on 27 January 2018.

The scratching followed a stable inspection conducted by HRV Stewards where Mr Justice’s conduct on this day was consistent with preparing Carload to be stomach tubed. "


Thank you Noel for the link to the TCO2 research paper - it is a comprehensive but easy read that everybody should undertake