Ann: Mining of First Ore Block at Granville Tin Project, page-74

Okay i'm here to put a full stop on the Lind conversion note. I've had time today to sift through a lot of things so here we go.

https://hotcopper.com.au/threads/ann-appendix-3b.4266798/ ($1.8M initial payment)

https://hotcopper.com.au/threads/ann-appendix-3b.4309329/ ($1.2M 2nd payment once we passed Resolution 4)

From the AGM, same conditions as the $1.8M but with additional notes:
The maturity date of the Additional Convertible Security shall be the latter of a) the date which is 24 months after the Additional Closing Date, and b) 30 days after all of the obligations of the Company in respect of the First ConvertibleSecurity have been satisfied (the Additional Maturity Date). 

So essentially once we settle the $1.8M, the $1.2M will need to be paid/converted within 30 days of this event. Of course Lind still have the option to convert whenever they want, this is just a final date for settlement.

https://hotcopper.com.au/threads/ann-appendix-3b.4607019/ (Additional $1M drawndown in January 2019)


From all of that i'm assuming once the $1.8M is out of the way we will need to settle $2.4M within 30 days if the conditions are correct from the AGM and the drawdown is on the same terms. As mentioned above, this is a final settlement and Lind can convert before these 30 days are up.

tldr; 3.5c conversion ends 23rd March 2019 as mentioned many times in the 3B Appendix announcements.