The format for question mark lists is QM identifier, Quality Grade, Area indicator, decription of QM. The QM numbers themselves are in the format Discoverer identifier, Year of discovery, Cave identifier, serial number. If you look at the html, you will find that the nearest survey station (without its "<cavenumber>." prefix) is included in an html comment for almost all leads. Now that there is an index to the surveys, there may soon be a way to get from the QM to the relevant survey file, but not the pictures :-(
In general, an unpushed QM will have a link from its QM number in the description to here, and a link from here to the relevant point in the description. If there is no link, it means that I can't yet work out where the QM is in the description, or the description doesn't yet exist :-).
Note that the quality grades are assigned by the explorers at the time, and that subsequent discoveries may mean that the grade is optimistic, since the lead may now drop into passage which wasn't then explored. Also, different explorers have different ideas - one man's "A-lead" may be another's "C-lead" :-(