"how many were spread during the first Gulf War"

2,592 FASCAM landmines laid in one small specific area as a defensive measure during the battle of Khafji

"TF Shepherd requested the FASCAM minefield be laid at grid QS63056235. Batteries Q, R, and S each fire 16 rounds of RAAM [Remote Anti-Armor Mine] long duration and 4 rounds of ADAMs [Area Denial Artillery Munition3] long duration."

1,314 Gator munitions (Aerial sowed minefield cluster bombs) deployed during Desert Storm.

An average Gator minefield covers an area approximately 200 x 650 meters.23 This is predicated on the delivery of 6 Gator dispensers, each containing 72 AT and 22 AP mines, by 1 Gator sortie. For planning purposes, two Gator sorties are considered sufficient to fix or block a typical adversary battalion, depending on the orientation of the minefield to the target battalion's axis of movement.

In the Gulf War, Gator munitions were used primarily to interdict, that is, prevent or hinder enemy use of an area or route for supply, communications, or movement.

Areas subjected to these strikes were plotted and advancing Coalition Forces were instructed to avoid those areas. As those areas were by-passed EOD units were responsible for marking them for future clearance.

To put this into perspective there were 210,000 unguided aerial munitions dropped on Iraq during the first Gulf War.

You are right Jom I did not mention the US in Laos as the US in Laos are paying for the clean up - the Russians in Afghanistan, the Cubans in Angola and the Argentines in the Falklands are NOT.