Was emergency burial of the Lunar Receiving Laboratory planned?

Question

Regarding the Lunar Receiving Laboratory, in Sunburst and Luminary Don Eyles wrote in Debriefing (p.162 of 2019 edition):

...all this in case they had, against expectation, brought home some otherworldly microbe or other lunacy. For the doomsday case bulldozers were standing by to bury the laboratory under a mound of dirt, astronauts, staff and all.

I haven't found any other reference to this, and it seems to be contradicted by SP-368 Biomedical Results of Apollo, where the second point under "Quarantine Assumptions and Guidelines" is:

2. The preservation of human life should take precedence over the maintenance of quarantine.

followed by the explanation:

Together, guidelines 1 and 2 provided the basis for the Lunar Quarantine Program; that is, although the probability that life existed on the moon was extremely low, the risk was sufficiently high that a quarantine program was justified. However, this risk was not considered great enough to permit an otherwise avoidable injury and/or loss of human life just to maintain the integrity of the program.

So is Eyles mistaken and there were no doomsday 'dozers (perhaps the idea was earlier floated?), or were situations envisaged where life wasn't sacrosanct (or might already have been lost)?

Answer 1

It's mentioned in the R. Bryan Erb Oral History on the Johnson Space Center oral histories page. Erb was manager of the LRL from 1969-1970.

ERB : You know, you fantasize about some of these scenarios, too. I thought supposing we do find something really deadly. What is the action? And it went through our minds that, well, you might, in fact, have to sacrifice everybody in the laboratory and bulldoze it under 100 feet of dirt. This sort of thing goes through your mind, if you really did have something that was seriously pathogenic. But fortunately, at least for the areas we visited, there was never anything of any serious hazard whatsoever.

Also mentioned in the official project history, but using the aforementioned interview as a reference.

There were a few breaks within the biological barrier in the early missions that led to a few staff members going into the quarantine with the astronauts, but all in all there were no serious problems. While lab managers had thought out extreme solutions in case there had been any serious danger from the lunar material, the “doomsday” predictions proved not to be accurate and any dramatic action, such as burying the laboratory under a mountain of dirt and sacrificing the lives of those still inside, ended up not being necessary.