The Vasa was wooden, and I don't know how much of its metal survived. However, the Mary Rose (I think) ship dates to the 1600, and was preserved too (I don't remember how much of its iron content survived, but wood survived very well - including some longbows).
      As a side note, I had recovered shiny nails from a bed of degraded leafs fallen into a well (the nails rusted quickly when exposed to air, though).

Well also tar doesn't produce any output to stdout, so this will create an empty bigfile... use the -O option for that. cat * | tar -zxO > bigfile

There are so many ways IPv6 remains broken and too many of the people with influence can tend to say 'working as designed'.

I know that's controversial, so I'll enumerate my pain points:
-DHCPv6 DUID is a pain to 'pre-provision'. When any operating system or firmware instance dhcpv6 for the first time, it sends out something that you'll never know what it would be ahead of time. In 99% of cases, the DUID is a generated value at 'OS Install time' that is used only for that specific OS, and a reinstall or livecd boot will change it out completely. stateless boot, multi-boot systems and multi-stage booting (i.e. pxe -> os) cannot hold together a coherent identity because DHCPv6 is explicitly designed not to do that. Binding by MAC is considered 'evil', but it has been the strategy used for ages. I wouldn't mind so much if DUID was commonly implemented as a value retrieved from motherboard firmware tables, but no one is stepping up to drive that behavior in a spec visible to all parties.

No PXE/bootp boot. I believe they are trying to reinvent, from scratch the boot design from IPv4, and are nearing completion. I fear the extent to which the baby has been tossed out with the bathwater (i.e. 'root-path' was dropped and no one has pulled it into dhcpv6).

Some standards are missing the capability to operate in IPv6. I.e. IPMI hase some IPv4 specific portions of the standard without IPv6 capable equivalents.

If you've ever lived in a city where an awful lot of snow falls in the winter, you would know that it's not enough to merely plow the snow. At some point the piles of plowed snow accumulates to the point where you can't plow any more snow onto the pile. In Michigan's Upper Peninsula, every so often during the winter months, GINORMOUS monster snow blowers are brought out which are used to blow the mini-mountains of accumulated plowed snow into dump trucks, which haul the snow out into the countryside. In Wisconsin, this sort of thing happens on a smaller scale in parking lots. There they use end loaders to put the snow into dump truck...which then haul the snow out into the countryside.

Here's a video of one of these giant snowblower trucks in operation. (One manufacturer of these trucks is Oshkosh Trucks. I bet they'd be willing to sell a few to the city of Moscow.)

It takes a serious investment of tax payer's money to buy and keep such equipment. It's not clear to me that municipal governments in Russia function as effectively as they do in Canada and the US. Are taxes collected? Do citizens actually pay their taxes? Or are the citizens too poor to pay taxes, and the wealthy oligarchs excused from paying them? If taxes are paid and collected, do they end up being used for public needs? Or do those funds end up in the pocket of some public official?

In America a lot of people like to bash "government" as wasteful and inefficient, but most Americans have no idea of just how wasteful and inefficient a government can be.