(Continuation from yesterday)

By the way, the reason why the US had sprayed the toxic chemicals from airplanes, was a threat of reprisal from the Union of Soviet Socialist Republics(USSR), (Russia, in present)

At that time, if the US used atomic weapons in Viet Nam, the USSR could make bombing planes come flying to Washington, DC.

(*)Though both nations had intercontinental ballistic missiles(ICBM) in those days, strategic bombers might have been main weapons.

Set it aside.

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An exterminatory operation has started.

At first, I got to work on the west area of the garden( a quarter area) .

Normally, I spread a black weedkilling sheet on the garden which could cut rays of the sun, and threw gravels, whose total weight was about 200kg, on the sheet.

Any weed cannot come out on the soil that is covered to protect from the light.

This is ecological dead plant operation, without soil pollution.

The problem was to how to carry the 200kg gravels.

I bought ten of 20kg gravels package, and I carried in and out the car with getting my arms. I was always worried about my "strained back".

However, I was surprised that even 200kg gravels could not bridge the five square meter.

So I decided to keep this operation about for five years freely.

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Even if five years are needed, it is shorted than the period of Vietnam War.

(*)I adopt "for 20 years" from Nov.1st, 1995 to April 30th, 1975. Complete defeat of the US.