Inquisitor 1491

[Ripper]

Nearly there! Just need a bit of help with:
19 across (this is thematic and only has 5 letters) Cut back to limit a nuclear by product.
31 across (normal clue) Heard up in Auckland initially - though not now (4) ???A.Last two are also normal: 17 down: Old woman filling a job in the old country (7) ?LMA?N? 31 down: Animal noise cut after receiving enquiring comment by Australian (6) ??eha? and finally (this should be simple!) 26 down: Runs hospital in Rhode Island supporting science in hard tumours (7) ?CIRRHI
Thanks in advance

[dannyk13]

26d.Scirrhi

[dannyk13]

31d.Heehaw?

[MartianAlien]

Tried elsewhere concerning 8dn.
Is it an anagram of PHOTO REFLEX less OF THE as the wordplay.
There are 2 words to fit the entry, but one beginning F does not fit any wordplay.

[Negomi]

19a tails, or tailings, are waste residue (a in slit)
31a huia, extinct bird
17d old name for Germany (job =line)
I put plexor for 8, a hammer to test knee reflex

[dannyk13]

17d.Almaine

[MartianAlien]

Negomi, thank you for 8dn.

[Ripper]

Thank you everyone and for explaining to this rather 'thick' person!