1. IP was performing adjustments to space between grindstone and diamond wheel prior to dressing grindstone when they discovered a drop of water on the diamond wheel.
2. IP moved to wipe off the drop with the work gloves they were wearing, but due to the fact that they were using their right hand to operate and move diamond wheel at the same time, their left ring finger became trapped between the wheel and the grindstone
*further details are currently under investigetion