Ho phatloha ho hoholo ha Seretse sa Li-fireworks le ho phatloha ha kerese ea Roma¶

Bareki le ponts'o ** likhetla tsa seretse tse ka jarolloang hape (44-millimeter / 1.75-inch 1.75-inch libolo tsa mokete le 75-to-150-millimeter / 3-to-6-inch salute shells), likuku tse ngata tse fofang, le likerese tsa Roma tse tšoaroang** li etsa chelete e fetang 10,000 US Department of Emergency United States feela. data), e nang le matsoho le menoana (liperesente tse 30 ho isa ho tse 35), hlooho/sefahleho/litsebe (liperesente tse 22), le mahlo (liperesente tse 15 ho isa ho tse 20) tse nang le matla a khatello e matla ea ho phatloha ho feteletseng le **1,200-to-2,000-degree-Celsius (2,200-to-3,600-degree-Techrenheit star) Hoo e ka bang likoluoa ​​tsa li-fireworks li lematsa kapa li bolaoa ke maraba a mane a ka thibeloang a pyrotechnic physics: (1) seretse se kenya embers-in-tube explosion kapa karohano ea khetla e shebileng fatše, moo opereishene a lihelang khetla e ncha ea phofshoana e ntšo fatše ka pampiri e sa tsoa thunngoa e Phahameng-Density polyethylene), letlapa la polyethylene le polyethylene e le 'ngoe ember, e thunya khetla metsotsoana e 0.5 hamorao ha sefahleho le letsoho la opareitara li le holim'a molomo ka kotloloho, (2) the "dud" shell walk-up and relight trap, moo tieho ea fuse e kubellang e sa bonahale ka har'a tube ka metsotso e 3 ho isa ho e 10 (hangfire) ebe e chesa ka har'a lehata la motho ea nyarelang ka har'a moqomo, (3) Polaka ea kerese ea Roma e phatloha (backfire) ha mosebelisi a tšoere kerese ea Roma e nang le libolo tse ngata letsohong la hae le polaka ea letsopa e petsohileng e hotetsa naleli 1,500 C ea magnesium/strontium ka morao ka har'a liatla, phala ea PVC le letsoho tšupu e entsoeng hae ea seretse, e pshatlehang ka har'a likotoana tse khanyang (X-ray-sa bonahaleng) ha khetla e phatloha. Haeba mollo o phatloha letsohong la motho, o otla leihlo, kapa o phatlola sefahleho kapa sefuba, letsetsa nomoro ea hau ea tšohanyetso ea sebakeng sa heno hang-hang (911 United States le Canada, 112 ho pholletsa le European Union, 999 United Kingdom, 000 Australia, 111 New Zealand) kapa sheba bukana ea rona ea lefats'e ea dinomoro tsa tshohanyetso. Bakeng sa liprothokholo tse amanang haufi-ufi tsa ho phatloha, ho khaoloa le ho sithabela ha mahlo, bala litataiso tsa rona ho li-fireworks mortar tube tip-over, shell misfire, le dud soaking, ho phatloha ha li-fireworks, ho chesoa ha sparkler, le likotsi tsa ho phatloha, ho khaoloa ho hoholo: ho boloka monoana, letsoho le maoto le matsoho, le likotsi tsa mahlo le tšireletso ea globe e bulehileng.

Etsa sena hona joale¶

1. Haeba mollo kapa khetla ea seretse e otla ka leihlong, U SE KE UA U pikitla, Hlatsoa, kapa u tobetsa thaka ea leihlo: theepa thebe e thata kapa kopi ea pampiri e sehiloeng tlase holim'a masapo a orbital hang-hang: Litšusumetso tse phatlohang li baka **ho phatloha ho hoholo, maqeba a cornea, hyphema (ka pele maling ka har'a lesapo la leihlo), ho chesa **. Ho hatella thaka ea leihlo ho pepeta lense, iris le gel ea vitreous ho tsoa leqebeng, ho baka bofofu bo ke keng ba etsolloa. Tlanya bokatlase ba pampiri e hloekileng kapa senoelo sa ho noa foam holim'a mokokotlo oa marapo le cheekbone e le hore ho se ke ha e-ba le letho le amang leihlo, koahela leihlo le sa lemalang ho fokotsa ho sisinyeha, 'me u tsamaise hang-hang Lefapheng la Tšohanyetso le nang le tšireletso ea ophthalmology.
2. ** Haeba khetla ea seretse, firecracker (M-80 / salute), kapa kerese ea Roma e phatloha letsohong la motho, ho laola mali a kotsi a radial / ulnar arterial a behang bophelo kotsing ka khatello e tobileng kapa forearm / holimo-lephaka windlass tourniquet:** Ho phatloha ho feteletseng ka har'a feisi e koetsoeng ("hand blast syndrome") ho bula li-arches tsa palema, ho robeha monoana le monoana oa letsoho le metacar. Tšoaea palema e entsoeng ka letsoho ka bonolo ka gauze e kolobisitsoeng ka letsoai, kenya khatello e tobileng methapong ea letsoho / forarm, kapa u tlamelle ** CoTCCC windlass tourniquet** 5 ho 8 centimeters (2 ho 3 inches) ka holim'a letsoho / setsoe haeba mali a khubelu a khanyang a tsoela pele.
3. ** Fumana menoana eohle e khaotsoeng kapa likaroloana tsa menoana, u li phuthele ka lesela le hloekisitsoeng le kolobisitsoeng hanyenyane ka letsoai, u li koahele ka har'a mokotla oa polasetiki o omileng o sa keneleng metsi, 'me u behe mokotla oo holim'a leqhoa le metsi (O SE KE UA kenya lisele tse khaotsoeng ka ho toba holim'a leqhoa kapa leqhoa le omileng): (39 degrees Fahrenheit)**. Ho beha menoana e sa roaloang letho holim'a leqhoa kapa ka nkhong ea metsi ho hoama le ho thella lisele tsa "microvascular endothelial", ho senya monyetla ofe kapa ofe oa ho lema hape.
4. Haeba khetla ea seretse kapa kuku e hloleha ho tuka ka mor'a hore u bonese fuse ("Dud" kapa "Misfire"), U SE KE UA khutlela morao ho ea e hlahloba kapa ho leka ho khantša fuse e khutšoanyane: emela bonyane metsotso e 20 ho isa ho e 30 sebakeng sa limithara tse 30 (maoto a 100): Pyrotechnic pyrotechnic quickmatch ka har'a likoti tse ntšo tsa pyrotechnic le viscoly powder.hangfire) e nang le mosi o sa bonahaleng kapa litlhase tsa metsotso e 5 ho isa ho e 15 pele e otla ka tšohanyetso qoso ea phahamiso ea phofo e ntšo. Boloka bashebelli bohle morao bakeng sa bonyane metsotso e 20 ho isa ho e 30, ebe u atamela ho tloha ka lehlakoreng (le ka mohla u se ke ua itšetleha ka karolo leha e le efe ea 'mele holim'a molomo oa tube) 'me u tšele tšupu ea seretse ho tloha bolelele ba letsoho u sebelisa **hose ea serapeng ** pele u kenya khetla ka 20-lithara (5-gallon) ea metsi bosiu bo le bong.
5. Haeba tube ea seretse e ka kengoang bocha e sa tsoa thunya khetla, ema bonyane metsotso e 10, u hlohlore lithōle tsa pampiri, kapa fetohela ho seretse se batang sa bobeli pele u kenya khetla e 'ngoe: Lebaka le le leng la ho phatloha ha seretse sefahlehong ke ho akhela khetla ea bobeli ka har'a tube e chesang e ntseng e na le *khateboto e lulang e kubella kapa fuse e benyang tlase. Lerumo le chesang le hotetsa mokotla oa phahamiso ea phofshoana e ntšo e botlaaseng ba khetla e ncha hang ha e thellisa ka moqomong, e thunya khetla ka ho toba sefahlehong le matsohong a motho ea sebetsang pele ba ka hula letsoho la bona morao.
6. Sheba motsu ho khetla e 'ngoe le e 'ngoe ea seretse e ka kenngoa hape (THIS SIDE UP) e nang le toche pele e palamisoa: Haeba khetla ea moeeng e kentsoe e shebile fatše ka har'a tšupu ea seretse (fuse ea tieho e shebile holimo 'me toche e phahamisetsa phofo e ntšo ka holimo), ho bonesa fuse ho hotetsa mochini o phahamisang holimo holim'a tšupu, ho tsamaisa khetla e boima ea sefofane ho theosa ho ea botlaaseng ba tšupu moo e theohang joalo ka seqhomane.

Sefate sa qeto: ho phatloha ha seretse sa li-fireworks, ho khaoloa letsoho, ho chesoa ha cornea, le ho leka-lekana ha khetla ea dud¶

flowchart TD
    Start["Boemo ba Tšohanyetso ba Litima-mollo: Ho phatloha ha Mortar, Mollo oa Kerese ea Roma, kapa Misfire"] --> EventType{"1. Ke boemo bofe ba tšohanyetso bo etsahetseng?"}

    EventType -->|"1. HO PHAHAMA KA LETSOHO / HO AMOHELA MONOANA"| HandTrauma["HAND BLAST PROTOCOL: 1. Paka leqeba la palema ka gauze e sa hloekang e mongobo 'me u sebelise khatello e tobileng 2. Haeba letsoho la letsoho le tsoa mali -> Etsa kopo ea CoTCCC Windlass Tourniquet ho forearm / letsoho le ka holimo 3. Fumana linomoro -> Koahela ka gauze ea saline e mongobo -> Tiisa ka mokotleng o omileng -> Beha SLURYWA-"]

    EventType -->|"2. TŠEBELETSO EA LEIHLO KAPA FUU OA NTHO KA LEIHONG"| EyeCheck{"2. Ho phatloha ha lebelo le phahameng ho otla kapa molora o holim'a metsi?"}

    EyeCheck -->|"Ho phatloha ho hoholo kapa Projectile Impact"| OpenGlobe["PHAHLOKO EA GLOBE (O SE KE UA TŠOHLOA KAPA U KHATELA): 1. U SE KE UA TLOTLISA, U HLASE, kapa U penya ka lesela la gauze leihlong 2. Theipi e Rigid Eye Shield kapa Mohope oa Pampiri Ka tlase holim'a potoloho ea masapo 3. Batla leihlo le sa Lebaleheng -> Hanghang Ophthalmology ED"]

    EyeCheck -->|"Lose Surface Ash (Intact Globe)"| AshFlush["ALKALINE ASH IRRIGATION: 1. Pull eyelids gently apart (pressing only on bony brow/cheek) 2. Flush gently with 0.9% saline or lukewarm water for 15 min to wash out alkaline potassium carbonate residue -> Slit-Lamp Exam"]

    EventType -->|"3. DUD SHELL / MISFIRE IN TUBE"| DudProtocol["20-TO-30-MINUTE HANGFIRE STANDOFF: 1. NEVER look down tube or relight a dud fuse 2. Clear 30 m (100 ft) perimeter and wait 20 to 30 minutes 3. Flood tube from distance with garden hose, then soak shell in 20 L water bucket overnight"]

Deep dive 1: The physics of mortar shell reload explosions, upside-down shells, and dud hangfires¶

Understanding how a reloadable consumer or commercial aerial mortar shell works explains why reloading a hot tube and peering over a misfired tube are the two most lethal actions in pyrotechnics.

1. Inside an Aerial Mortar Shell: Lift Charge vs. Time Fuse vs. Break Charge¶

Every reloadable aerial mortar shell (whether a 44-millimeter consumer canister shell or a 100-millimeter commercial spherical display shell) is a two-stage explosive ordnance device: 1. Stage 1: The Black-Powder Lift Charge (75% KNO3 + 15% Charcoal + 10% Sulfur) at the Base: - Packaged in a thin paper cone or pouch at the very bottom of the shell. When you light the long green visco safety fuse protruding from the top of the mortar tube, the flame burns down the side of the shell to the bottom and ignites the lift charge. - The lift charge deflagrates in 0.02 seconds, generating a high-pressure gas piston inside the closed bottom of the mortar tube that launches the shell 30 to 100 meters (100 to 330 feet) into the sky at 150 to 250 kilometers per hour (95 to 155 miles per hour). 2. Stage 2: The Pyrotechnic Time-Delay Fuse and Flash-Powder Break Charge: - At the exact millisecond the lift charge fires at the bottom of the tube, the hot gases ignite a thick, slow-burning pyrotechnic time-delay fuse (calibrated to burn for 2.5 to 4.0 seconds while the shell climbs to apogee). - When the shell reaches the peak of its trajectory, the time fuse reaches the center of the shell and detonates the flash-powder burst charge (potassium perchlorate + aluminum/titanium powder), blasting burning metallic color stars outward in a 50-meter sphere.

====================================================================================
   THREE LETHAL MORTAR SHELL FAILURE MODES: EMBER RELOAD, UPSIDE-DOWN & HANGFIRE
====================================================================================

   [1] HOT-TUBE EMBER RELOAD BLAST       [2] UPSIDE-DOWN SHELL ("FLOWERPOT")
        (Operator Hand Over Muzzle)          (Lift Charge on TOP, Break on BOTTOM)
               \ (Hand) /                              || Fuse Lit
                \  ||  /                               \/
            +--------------+                    +--------------+
            |   [Shell]    |                    | [Lift Charge]| <-- Fires DOWNWARD
            |      ||      |                    |  [Break Core]| <-- Detonates at
            |      \/      |                    |    (Arrow    |     Ground Level
            | [Lift Pouch] |                    |  Points Down)|     Shredding Tube
            |  * EMBER *   |                    +--------------+
            +--------------+                    ================
          Glowing paper ember at              Shell loaded upside down in dark;
         bottom ignites lift pouch           explodes inside tube 3 sec later.
         instantly upon drop-in.

   [3] THE "HANGFIRE" DUD TRAP (SMOLDERING DELAY FUSE)
         Fuse stops sparkling outside -> Smolders invisibly inside paper casing
         for 3 to 12 minutes -> Fires 150 km/h shell straight into face of
         person leaning over tube. (MANDATORY RULE: Wait 20-30 Min + Hose Soak).
====================================================================================

2. Why Reloading a Recently Fired Mortar Tube Blows Off Hands and Faces¶

When you fire a shell from an HDPE or cardboard mortar tube, the black-powder lift charge leaves behind shredded fragments of smoldering kraft paper, glowing charcoal slag, and hot cardboard disks at the bottom of the dark barrel: - Those paper embers glow quietly at 400 to 600 degrees Celsius (750 to 1,100 degrees Fahrenheit) for 2 to 8 minutes after launch, fueled by the chimney draft of the vertical tube. - Because the black-powder lift pouch on the bottom of the next shell is wrapped in thin tissue paper (ignition temperature 280 to 300 degrees Celsius / 536 to 572 degrees Fahrenheit), the instant an operator holds a fresh shell over the muzzle and drops it down the tube, the bottom of the shell lands squarely on the glowing ember. - Instead of the operator having 6 seconds of green-fuse burn time to walk away, the shell fires instantaneously out of the barrel in 0.05 seconds while the operator's fingers are still inside the muzzle and their eye socket and forehead are 30 centimeters (12 inches) above the tube. - How to Prevent Reload Detonations: 1. Never place your face, head, chest, or hands directly over the open mouth of a mortar tube at any time (even when loading an unlit shell). Hold the shell by its top fuse string from the side of the tube at arm's length so that if it fires immediately upon touching the bottom, it shoots harmlessly past your shoulder into the sky. 2. Allow at least 10 minutes of cooling time between shots in the same tube, invert the cold tube to dump out all paper ash, and inspect the bottom with a flashlight before reloading (or buy pre-loaded multi-shot cakes that never require manual reloading).

Deep dive 2: Prehospital trauma care for "Fireworks Blast Hand" and finger amputations¶

When a firecracker, salute, Roman candle backfire, or mortar shell explodes inside or next to a human hand, it produces a signature reconstructive surgical emergency known as "The Fireworks Blast Hand."

1. The Four-Zone Biomechanics of a Closed-Fist Pyrotechnic Blast¶

Hand surgeons classify fireworks hand blasts as a combined high-pressure barotrauma, ballistic shrapnel, and 1,500 C thermal-chemical burn injury: 1. Hyperextension Dislocation and Thumb Carpometacarpal (CMC) Avulsion: - The expanding spherical gas bubble inside the palm forces the thumb and fingers into violent hyperextension and abduction, ripping the thenar muscles (thumb web space) apart, splitting the skin of the palm down to the carpal tunnel, and either dislocating or completely amputating the thumb, index, and middle fingers. 2. Digital Artery Thrombosis vs. Radial/Ulnar Hemorrhage: - While small digital arteries in amputated finger stumps often go into vasospasm initially, partial lacerations of the superficial and deep palmar arches or the radial and ulnar arteries at the wrist bleed profusely, rapidly leading to hemorrhagic shock, especially in children and adolescents. 3. Step-by-Step First Aid for a Mangled Hand and Amputated Digits: - Step 1 (Control Bleeding): Lay the patient flat. Place a thick pad of sterile gauze (moistened with sterile saline or clean water so it does not stick to raw burned tendons) over the palm and wrap firmly with an elastic roller bandage, elevating the hand above heart level. If bright red blood continues soaking through or spurting from the wrist/forearm, apply a CoTCCC windlass tourniquet 5 to 8 centimeters (2 to 3 inches) above the wrist or on the upper arm and twist until bleeding stops completely. - Step 2 (Remove All Rings, Watches, and Bracelets on the Injured Limb Within 60 Seconds): Blast-injured hands and wrists swell to twice their normal diameter within 15 minutes. A wedding band or fashion ring left on a surviving finger acts as a rigid steel tourniquet that causes ischemic gangrene and costs the patient a second finger. Slide or cut all rings and wristwatches off immediately. - Step 3 (Proper "Bag-on-Ice-Water" Preservation of Amputated Fingers): - Search the ground with a flashlight for any amputated fingers, thumb tips, or large bone/skin segments (bring every piece to the hospital; even if a badly crushed index finger cannot be replanted, hand surgeons frequently use its intact skin, nerves, and bone as "spare-parts microsurgical grafts" to save and reconstruct the thumb). - Gently rinse loose dirt off the amputated finger with sterile saline (never scrub it and never soak it in antiseptic, alcohol, or hydrogen peroxide). - Wrap the finger in a piece of sterile gauze lightly moistened with saline, seal it inside a clean, dry zippered plastic bag, and place that sealed bag inside a second container filled with a slurry of half ice and half water (4 C / 39 F). Never let an amputated finger touch ice directly (causes frostbite crystal necrosis) and never submerge it loose in water (causes hypotonic tissue maceration).

====================================================================================
     CORRECT MICROVASCULAR PRESERVATION OF AMPUTATED FINGERS ("BAG-ON-SLURRY")
====================================================================================

                     +---------------------------------------+
                     |     OUTER CONTAINER / COOLER CUP      |
                     |   Filled With 50% Ice + 50% Water     |
                     |          (Maintains 4 C / 39 F)       |
                     |    +-----------------------------+    |
                     |    |  SEALED WATERTIGHT ZIPLOC   |    |
                     |    |  +-----------------------+  |    |
                     |    |  | Amputated Finger/Thumb|  |    |
                     |    |  | Wrapped in Moistened  |  |    |
                     |    |  | Sterile Saline Gauze  |  |    |
                     |    |  +-----------------------+  |    |
                     |    +-----------------------------+    |
                     +---------------------------------------+
====================================================================================

Deep dive 3: Corneal thermal burns, alkaline potassium carbonate residue, and open-globe shielding¶

One in five fireworks injuries strikes the eye, and bystanders (especially children watching from 3 to 15 meters away) account for nearly 50 percent of all fireworks eye blinding incidents.

1. Why Fireworks Eye Injuries Are a Triple Threat: Blunt Rupture + 1,500 C Burn + Alkaline Burn¶

When a misfired mortar shell, bottle rocket, or Roman candle star strikes the eye: 1. Blunt & Penetrating Open-Globe Trauma: A 44-millimeter mortar shell or bottle rocket hits the eyeball at 100 to 200 km/h (60 to 125 mph), causing an open-globe rupture (corneoscleral laceration), traumatic hyphema (blood filling the anterior chamber), lens dislocation, and retinal detachment. 2. Alkaline Potassium Carbonate (K2CO3) Saponification: Burned black powder (KNO3 + C + S) and pyrotechnic stars leave behind a caustic residue of potassium carbonate (K2CO3), potassium sulfide (K2S), and metallic oxides with an alkaline pH of 10.5 to 12.0. Unlike acids, alkaline firework residue saponifies fatty acids in corneal cell membranes, eating deeper into the corneal stroma every minute it stays in the tear film.

2. The Critical Ocular Triage Split: When to Shield Only vs. When to Irrigate Gently¶

Before touching a fireworks eye injury, inspect the eye under a flashlight (without pressing on the eyelid) to make this decision: 1. IF ANY SIGN OF OPEN-GLOBE RUPTURE IS PRESENT -> SHIELD ONLY (DO NOT FLUSH, DO NOT PRESS): - Red Flags: (a) The patient was struck directly by a flying projectile (rocket, shell, casing fragment, or PVC shard); (b) the pupil looks teardrop-shaped, peaked, or pulled to one side; © brown iris tissue or clear jelly is protruding; (d) the front of the eye is filled with blood (hyphema); or (e) the eyeball looks deflated. - Action: Do NOT irrigate with a forceful tap stream, do NOT pull out any embedded sliver, and do NOT put ointment into the eye. Cut the bottom 4 centimeters (1.5 inches) off a clean paper or foam cup (or use a rigid aluminum Fox eye shield) and tape it across the bony forehead brow and cheekbone to form a protective dome vault. 2. IF ONLY FINE ASH, SPARKS, OR POWDER SMOKE ENTERED AN INTACT EYE -> IRRIGATE GENTLY FOR 15 MINUTES: - If no projectile struck the eye, the pupil is round and centered, and only fine gunpowder smoke, sparkler flakes, or ash blew into the eye, gently irrigate the open eye with sterile 0.9% normal saline or lukewarm water for 15 to 20 minutes (pressing your fingers solely against the bony brow ridge and cheekbone, never on the globe itself) to wash out alkaline potassium carbonate ash before going to the Emergency Department.

Linomoro tsa libaka tsa tšohanyetso le liprothokholo tsa mekhatlo¶

Lipotso tse botsoang khafetsa¶

Why should I NEVER walk up to a "dud" firework or try to relight a fuse that went out?¶

When a firework fuse appears to stop burning on the outside, the black-powder core frequently continues **smoldering invisibly inside the paper wrapper or mortar tube (`a hangfire`)** for **5 to 15 minutes** with zero visible smoke or sparks. Walking up to peer down the barrel of a mortar tube or bending down to relight a short stub of fuse places your eyes, face, and brain directly over the muzzle at the exact moment the smoldering ember hits the lift charge and launches the shell at **160 kilometers per hour (100 miles per hour)**. Always wait a strict **minimum of 20 to 30 minutes**, hose the device down from a safe distance, and submerge it in a bucket of water overnight.

Why did a reloadable mortar shell explode the instant I dropped it into the tube before I even lit the fuse?¶

When you fire an aerial shell from a mortar tube, the black-powder explosion leaves behind **tiny glowing paper and charcoal embers** at the bottom of the dark barrel that stay hot (**400 to 600 degrees Celsius**) for several minutes. Because the bottom of the next reloadable shell contains an exposed tissue-paper pouch of **black-powder lift charge**, dropping a fresh shell into a recently fired tube sets the new shell right on top of the glowing ember, firing it **0.05 seconds later while your hand and face are directly over the mouth of the tube**. Always wait at least **10 minutes** between reloads, dump out all ash, and hold shells from the side at arm's length when loading.

How do I preserve an amputated finger or thumb after a fireworks hand blast so surgeons can reattach it?¶

Latela molao oa microsurgical **"Bag-on-Ice-Water Slurry"**: (1) Hlatsoa ka bonolo litšila tse hlephileng monoaneng o khaotsoeng ka letsoai le sa hloekang kapa metsi a hloekileng (le ka mohla u se ke ua se hohla kapa ua tšela joala / peroxide ho sona); (2) phuthela monoana ka sengoathoana sa **sterile gauze e kolobisitsoeng habobebe ka letsoai **; (3) e tiise ka har'a mokotla oa polasetiki o omileng oa ** o omileng, o sa keneleng metsi; le (4) beha mokotla oo o tiisitsoeng holim'a **motsoako oa halofo ea leqhoa le halofo ea metsi**. **Le ka mohla u se ke ua beha monoana o khaotsoeng ka ho toba holim'a leqhoa le se nang letho kapa leqhoa le omileng **, e leng ho hoama le ho phatlola methapo ea mali e sa bonahaleng e le hore palo e se ke ea kenngoa hape. Tlisa likotoana tsohle tsa menoana tse fumanoeng sepetlele, le haeba li pshatlehile, hobane lingaka li li sebelisa e le li-grafts tsa likarolo ho boloka monoana o motona.

Why must I tape a paper cup over a fireworks eye injury instead of pressing gauze on it?¶

High-velocity fireworks projectiles, casing shrapnel, and blast waves frequently **slice or rupture the wall of the eyeball (`an open-globe injury`)**. If you press a folded gauze pad or ice pack directly against a ruptured eyeball, the external pressure **squeezes the delicate iris, lens, and retina out through the tear**, causing permanent blindness. Instead, cut the bottom off a clean **paper or foam drinking cup** and tape it across the **hard bony brow ridge and cheekbone** so it forms a rigid dome over the eye without touching the eyeball or eyelids.

Why is it so dangerous to hold a Roman candle in your hand when shooting it?¶

A Roman candle fires 5 to 10 balls of burning magnesium and metallic salts at **1,500 degrees Celsius (2,730 degrees Fahrenheit)** out of a cardboard tube whose bottom end is plugged only by a disk of **compressed clay**. If the clay bottom plug is cracked or the cardboard wall ruptures on the 3rd or 4th shot, the propellant charge **fires the white-hot burning ball backward out the bottom of the tube straight into the palm of your clenched hand and wrist**, causing third-degree tendon burns and radial artery hemorrhage. Always bury Roman candles halfway in a bucket of sand or strap them to a stake in the ground. Taking a certified first aid, CPR, and Stop the Bleed course from the Red Cross, St John Ambulance, or a local trauma center prepares you to respond to any blast or burn emergency.

Litataiso tse amanang¶

• Fireworks mortar tube tip-over, shell misfire, dud soaking, and Roman candle backfire
• Fireworks explosions, sparkler burns, and blast injuries
• Ho khaoloa ho hoholo: ho boloka monoana, letsoho le maoto le matsoho
• Eye injuries, chemical splashes, and open-globe shielding
• Ho tsoa mali ho matla le ho sebelisa windlass tourniquet

Mehloli le tataiso ea semmuso¶

• United States Consumer Product Safety Commission (CPSC) & National Fire Protection Association (NFPA): Annual Fireworks Annual Report (Emergency Department-Treated Fireworks Injuries by Device Type and Body Region), NFPA 1123 (Code for Fireworks Display: 20-to-30-Minute Misfire Wait and HDPE vs. PVC Mortar Standards), and 16 CFR Part 1507.
• American Society for Surgery of the Hand (ASSH) & American College of Surgeons (ACS): Clinical Management of the Fireworks Blast Hand (Thenar Space Disruption, Digital Artery Thrombosis, Ring Removal, and Indirect 4 C Normothermic/Hypothermic Replantation Transport).
• American Academy of Ophthalmology (AAO): Ocular Fireworks Trauma Triage: Open-Globe Shielding Protocol (Fox Shield / Paper Cup Vault), Alkaline Potassium Carbonate (K2CO3) Irrigation, and Bystander Injury Prevention.
• Health and Safety Executive (HSE, United Kingdom) & Natural Resources Canada (NRCan Explosives Regulatory Division): Working Safely with Display and Consumer Fireworks (Hangfire Standoff Intervals, Mortar Rack Bracing, and Category F2/F3/F4 Separation Distances).