On 4/8 an EE stepped off the personnel lift of a loading shovel and felt discomfort in their knee. Area had just been bladed & was relatively flat with no holes or chunks. The EE continued to work several days, but knee was bothering. EE saw a dr who recommended an MRI. Scheduling took time & EE continued to work. The MRI showed torn meniscus. Worked until 4/29, out for surgery.