I'm JUST SO HAPPY you're here!

Backs of Cards: two blank NFPA hazard diamonds, rotated so one is right side up whichever way you're holding the card

The Fool: sudden drop into deep water

The Magician: electrical hazard

The High Priestess: oxidizer (chemical that isn't flammable per se but will set other thing on fire)

The Empress: biohazard

The Emperor: radiation hazard, radioactive materials

The Hierophant: flood zone

The Lovers: strong magnetic field

The Chariot: warning that there are forklifts around

Strength: Moving parts that can crush you

The Hermit: asphyxiating atmosphere

Wheel of Fortune: counter-rotating rollers

Justice: corrosive substances

The Hanged Man: overhead or suspended load (that might fall on you)

Death: acute toxicity

Temperance: health hazard

The Devil: active volcano zone

The Tower: unstable cliff overhead

The Star: laser radiation

The Moon: automatically starting equipment

The Sun: optical radiation

Judgement: overhead obstacle

The World: explosive materials

Cups Suite: are almost all related to chemical safety? Ace through 4 are NFPA hazard diamonds for health hazards, the face cards are all advisories of what PPE you should use.

Ace of Cups: material that is not particularly hazardous to be exposed to.

One of Cups: material that causes irritation on exposure.

Two of Cups: material that can cause temporary incapacitation on exposure if you're exposed to a lot of it.

Three of Cups: really dangerous material that can cause serious injury or incapacitation with just a brief exposure.

Four of Cups: extremely dangerous material that can kill or seriously injure you with just a brief exposure.

Page of Cups: wear a lab coat

Knight of Cups: wear a welding mask

Queen of Cups: wear a respirator

King of Cups: wear self contained breathing equipment

Batons Suite: all fire safety related. Ace thru 4 are NFPA hazard diamonds for flammable hazards, face cards show locations of fire safety equipment.

Ace of Batons: not flammable or very difficult to set on fire.

One of Batons: can catch fire if you get it really hot.

Two of Batons: can catch fire pretty easily if heated or exposed to flame.

Three of Batons: easily catches fire at room temperature.

Four of Batons: flammable gases and easily dispersed substances that easily catch fire at any temperature.

Page of Batons: fire alarm button

Knight of Batons: fire ladder

Queen of Batons: fire hose

King of Batons: fire extinguisher

Coins Suite: ace thru 4 are NFPA hazard diamonds for reactive substance, face cards are a mixture of electrical and mechanical hazards.

Ace of Coins: not reactive.

One of Coins: can be unstable at high temperature or pressure.

Two of Coins: can react violently at high temperature or pressure or when exposed to water.

Three of Coins: can explode but it's not that easy to make it explode.

Four of Coins: explodes at the slightest provocation.

Page of Coins: non-ionizing radiation (e.g. microwaves)

Knight of Coins: charging batteries

Queen of Coins: press will crush your hand if you put it in there.

King of Coins: press brake that can make the workpiece swing violently and smack you in the face.

Swords Suite: ace thru 4 are NFPA hazard diamonds for special hazards, face cards are general hazard signs.

Ace of Swords: reacts with water in a dangerous way

One of Swords: asphyxiant gas

Two of Swords: oxidizers again

Three of Swords: cryogenic materials

Four of Swords: corrosive materials

Page of Swords: notice sign (info not hazard related)

Knight of Swords: caution sign (something here might injure you but probably only a minor or moderate injury)

Queen of Swords: warning sign (something here might seriously injure or kill you)