A few bottles of whisky from the 70s
 

Hi!

I recently came across quite a few bottles of scotch at my grandparents village house, and so I'm here today asking for your expert opinions, good people of whisky.com!

All whiskies were:
-purchased during the early 70s
-Stored vertically in a dark room for most of these 40 something years
-Stored without any climate control so they have been through 40 mild winters and as many very hot summers (village is on a greek island!)
-slightly evaporated (a few mm), although unopened

Here are photos of the ones that looked unfamiliar to me -either because of the brand or the bottling-, as I'm rather new in the whisky universe.

http://img706.imageshack.us/img706/6849/wh1ql.jpg
http://img94.imageshack.us/img94/3693/whall.jpg
------
http://img828.imageshack.us/img828/9986/35090177.jpg
------
http://img210.imageshack.us/img210/2212/bt1v.jpg
http://img836.imageshack.us/img836/9641/bt23.jpg
------
http://img192.imageshack.us/img192/9707/bell1x.jpg
http://img26.imageshack.us/img26/7956/bellall.jpg

In most of those bottles, when shaken in front of a light, the whisky appears to contain very small white-ish floating particles, and/or even sediment.
http://img406.imageshack.us/img406/1946/sediment.jpg
I tried to look it up online but results varied from "whisky sea monkeys-do not drink!" to "reconstituted proteins due to unchilled filtering-drink up" and quite naturally, I have no idea what to do.
I opened and filtered a bottle of haig and it smells and tastes just fine -actually even better than the contemporary one imho.

So basically what I'm asking is:
A) are they worth anything or should I just start drinking and
B) Are they actually safe to drink?

Thank you!