An employee suffered an amputation in an external incident involving an unguarded drill, highlighting the risks of operating machinery without proper safety measures. The investigation found a lack of guarding on the drill, incorrect gloves worn by the operator, and potential lack of operator training. To prevent similar incidents, the company will ensure all drills have guards and brakes, only allow tightly fitting gloves near machinery, restrict drill operation to trained employees only, and communicate this incident to all staff.