Transloading took place at Alamosa right up to the end of narrow-gauge operations. After 1964-65 The freight traffic slowed to a trickle, But there were still two producing sawmills on-line (Durango & Chama) and I suppose a certain amount of agricultural traffic. Geo. W. Hilton states that Alamosa never even had an arrangement for gravity transfer of bulk commodities.
"Only a gantry crane for lumber and pipe provided mechanized transfer at Alamosa and bulk cargo to the end was handled by shovel"
At least some of the lumber must have been transfered by hand as well--I've seen a 60's-era picture somewhere of one of the on-line mills that showed fresh-cut lumber being loaded by hand into narrow-gauge boxcars. This of course would have made it impossible to use the crane for unloading when the cars reached the "outside world" at Alamosa.
J