Didn't get to that staircase on my visit a few years back, gutted about it. But we did pick up something odd near the old nurses station - temp dropped noticeably and one of our group felt genuinely uneasy, almost dizzy. My recorder caught what sounded like a child's voice on that same stretch of corridor.
Cold spots are interesting because they're so easy to dismiss as a draught or poor insulation in an old building. But when multiple people feel it independently without being told where to look, that changes things a bit for me.
Anyone else been doing EVP work there? Would love to know what frequencies others are picking up. Some locations seem to produce clearer results depending on where you position the recorder.