We most certainly need to know the brand of toilet tissue that ensures the most favourable lighting level, and the longest burn time.
Then that brand name will need to be inserted into air regulations, to ensure that sub-standard varieties are not substituted.
I trust the appropriate authorities will also now enquire as to whether the toilet roll positioners had airside passes, and if not, why not? And did those toilet roll positioners have the necessary training and qualifications and hi-viz clothing, to ensure that the toilet rolls were correctly and safely positioned? The ramifications are huge, if even one of the positioners failed any of the above requirements.