Cash-Landrum Incident -- Acute Radiation Syndrome: The Medical Science
| Incident Name: | Cash-Landrum Incident |
|---|---|
| Incident Date: | December 29, 1980 |
| Location: | Farm to Market Road (FM) 148 |
| State/Provence: | Texas |
| City/Town : | Huffman |
| Country : | USA |
| Shape : | Diamond shaped |
| Case Files : | Cash-Landrum Incident Case Files |
Cash-Landrum Incident -- Acute Radiation Syndrome: The Medical Science
What Acute Radiation Syndrome Is
Acute Radiation Syndrome (ARS), also called radiation sickness or radiation poisoning, is a condition resulting from a high dose of penetrating radiation to a significant portion of the body within a short time (typically less than 24 hours). ARS is well-characterized medically, with specific stages, predictable timing, and dose-dependent severity.
The Four Stages of ARS
| Stage | Timing | Description |
|---|---|---|
| Prodromal (initial) | Minutes to hours after exposure | Nausea, vomiting, diarrhea, headache, fatigue; the earliest and most rapidly onset symptoms; severity depends on dose |
| Latent | Hours to weeks after exposure | Apparent improvement; the person may feel better; bone marrow and other systems are beginning to fail |
| Manifest illness | 1-4 weeks after exposure (depends on dose) | The main phase of illness; hair loss, skin effects, immune suppression, gastrointestinal effects; in severe cases, hemorrhage and infection |
| Recovery or death | Weeks to months | Lower doses: gradual recovery; high doses: systemic failure and death |
The Cash-Landrum Symptoms Mapped to ARS
| ARS Symptom | Betty Cash's Experience | Consistency |
|---|---|---|
| Prodromal nausea/vomiting | Within hours of returning home | Highly consistent |
| Prodromal diarrhea | Within hours | Highly consistent |
| Prodromal headache | Within hours | Consistent |
| Prodromal fatigue | Within hours | Consistent |
| Latent period | A brief period of relative improvement may have occurred | Consistent |
| Hair loss (manifest) | Began within days to weeks; lost over half of scalp hair | Highly consistent; classic ARS sign |
| Skin blistering (manifest) | Large blisters on head, neck, face, around eyes | Consistent with severe skin dose |
| Lymph node swelling (manifest) | Swollen neck glands | Consistent with immune response to radiation |
| Extreme weakness (manifest) | Near-coma level; required hospitalization | Consistent with high-dose ARS |
Dose Estimation
Based on the described symptoms, radiation physicists who have reviewed the case have proposed that Betty Cash may have received a dose in the range of 2-5 Gray (Gy) of whole-body radiation -- sufficient to produce moderate to severe ARS. This dose range would explain:
- Hair loss beginning 2-3 weeks after exposure (consistent with 2+ Gy)
- Severe nausea and vomiting within hours
- The hospitalization required
The gradient of severity (Betty >> Vickie > Colby) is consistent with the gradient of exposure -- Betty was outside longest and closest; Colby was inside the vehicle for most of the encounter and the vehicle provided some shielding.
What Could Produce This Dose at 130 Feet
For a person standing 130 feet from a radiation source to receive 2-5 Gy, the source would need to be extraordinarily powerful. Standard radiation sources (industrial, medical) cannot produce this at range. The implied source intensity is consistent with an unshielded or inadequately shielded nuclear reactor or high-energy radiological device -- not with any conventional aircraft propulsion system.
