The Mentor Program was the brain child of the Railroad's first female Superintendent. Having come up through the ranks in train service, she saw a huge shift in hiring demographics. Railroaders were retiring in record numbers, and as Doc stated, there were fewer veterans to pass down the "Institutional Knowledge and Culture" to the new hires.
A huge part of successful operation is based on tradition and unwritten knowledge. She recognized this, and worked very hard to organize a mentor program that didn't miff the Training and Human Resources Departments.
The program generally worked well. A list of possible mentors was constructed. The Company sought first the knowledgeable, low key veteran who may have never been recognized for his talent. Many of the men enjoyed the task, though several reported back some new employees as "bad apples". That too was a benefit to the company, and permitted them to recognize and remove some troublesome people before they became "vested".
The Superintendent is long retired, as are most of the mentors. But lots of people today recall the person to whom they were assigned who helped "show them the ropes".
Doc mentions the selection of certain individuals for special assignments. Naturally the contracts require extra assignments to be posted when possible and when not possible, to be called in seniority order. The supervisor assigned to a special project, if he was conversant in how the crew board operated, would work around this and always get the men he wanted on the extra.
As usual, the goal was to exclude blow-hards, troublemakers and incompetents. As those trains seem to cultivate in some with advanced seniority, it was often challenging to exclude a senior guy. But it was always done...
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The Long Island Tool
"... overzealously discharges his duties;
...a "tool" of the administration"