"an_old_friend" wrote

...of any restriction of modes on 60m nor any
mention of 60 metter in part 97 at all...

§97.303(s) is very clear on the topic. You're correct that it doesn't
specifically call it a "60 metter" band, but it DOES spell out in detail the
mode restrictions and other technical requirements and restrictions of the
frequencies I think you call "60 metters".

"97.303(s) An amateur station having an operator holding a General, Advanced or
Amateur Extra Class license may only transmit single sideband, suppressed
carrier, (emission type 2K8J3E) upper sideband on the channels 5332 kHz, 5348
kHz, 5368 kHz, 5373 kHz, and 5405 kHz. Amateur stations shall ensure that their
transmission occupies only the 2.8 kHz centered around each of these
frequencies. Transmissions shall not exceed an effective radiated power (e.r.p.)
of 50 W PEP. For the purpose of computing e.r.p. the transmitter PEP will be
multiplied with the antenna gain relative to a dipole or equivalent calculation
in decibels. A half wave dipole antenna will be presumed to have a gain of 0
dBd. Licenses using other antennas must maintain in their records either the
manufacturer data on the antenna gain or calculations of the antenna gain. No
amateur station may cause harmful interference to stations authorized in the
mobile and fixed services; nor is any amateur station protected from
interference due to the operation of any such station."

73, de Hans, K0HB