Custom-Exempt Mobile Rig
Round 1’s economics were all for inspected units. Custom-exempt mobile slaughter is the older model: ERS notes “custom-exempt mobile kill trucks … have been around for decades” (ERR-150). It needs no kill compartment, no inspector station and no HACCP validation. It costs a fraction as much.
What the rig is
On Sentinel’s custom-exempt models, cattle are killed, skinned and eviscerated in the field, outside the trailer. The trailer provides:
- Lifting: a hydraulic swing crane and a roof crane with 8,000–10,000 lb winches.
- Carcass handling: an aluminum skinning cradle, a gambrel, and a gut-barrel hoist.
- Water: 100–200 gal, with on-demand hot water.
- Power: a 6.5–13 kW generator.
- Cooling: a refrigerated cooler with stainless rail, where quarters or halves ride hanging to the cut shop.
It is “compact enough for a 3/4 ton pickup” (Sentinel).
Prices (Sentinel Trailers, Idaho Falls, 2026 list, “starting at”)
| Model | Price | Label | Beef per trip (cooler) |
|---|---|---|---|
| 12 ft bumper pull | $72,000 | Not USDA | 3–6, as quarters |
| 16×8 ft gooseneck | $92,000 | Not USDA | 5–8, as quarters |
| 16×10 ft gooseneck | $115,000 | Not USDA | 8–10, as halves |
| 30 ft gooseneck | $192,000 | USDA compliant | 8–12 |
| 53 ft semi | $300,000 | USDA compliant | kill + cooler + cut floor |
For comparison, the Rusted Gate plan put an inspected Friesla unit at about $550k turnkey (2022). Mobile Processing Trailers & Supply (Colorado) publishes size classes but no prices. Not included above: options, delivery, the tow vehicle, and any 2025–26 quote other than Sentinel’s.
Minimum legal rig (Washington State comparison). WAC 16-19-100 requires only a nonporous van body, a 2,000 lb hoist, a tool sterilizing tank, and a built-in 40 gal water tank. The licence costs $25/yr. A traditional boom-truck “farm kill” rig is therefore legal there for far less than a refrigerated trailer (WSDA). Virginia sets no comparable equipment minimum in 2VAC5-210 or the VDACS guide. Ask OMPS what it inspects for. Washington also requires a tag on each quarter, an owner-signed transit certificate, and carcasses hung during transport. These are useful SOP models even where Virginia doesn’t require them.
Throughput is set by the cooler
- Head per trip is capped by cooler rail: 3–10 beef depending on model. That capacity, not kill speed, likely limits a day unless the operator unloads mid-day [inferred].
- No source gives a custom-exempt crew size or head per day. For reference, the Idaho 2009 inspected model assumed 2 cattle/hour.
Pricing: what the market pays
| Who | Model | Kill | Cut and wrap | Year |
|---|---|---|---|---|
| Beaverhead Meats, Dillon MT (Sentinel customer) | Custom-exempt shop with mobile slaughter | $75–$125 “when applicable” | $0.86–$1.00/lb | 2026 |
| Backyard Butchery, Harrah OK (round 3) | Mobile, “We Come To You” (custom-exempt inferred) | $100/head (<1,800 lb live), $150 over; $2.65/mile one way; offal haul-off $100 optional; $500/day minimum; $100 deposit; $200 emergency | $0.90/lb hanging | 2025 |
| Central Coast CA MHU (round 3; USDA, comparison) | Kill-only, leased to a butcher shop | $150/head; renderer about $6/animal; $800+/day operating cost | — (shop cuts) | undated |
| T&E Meats, Harrisonburg VA | USDA + custom, fixed | $75 | $1.05/lb (+$0.10 resale label; +$50 for cattle >30 months) | 2025 |
| Seven Hills, Lynchburg VA | USDA, fixed | none | $1.20–$1.30/lb all-in, $775 minimum | 2026 |
Sources: Beaverhead, Valley prices.
The pricing problem [inferred]: at a fixed plant, the kill fee is about $75 and most revenue is in cutting. A kill-only mobile service can’t live on a $75 kill fee. Round 3 found the fee shape real operators use: a flat kill fee plus mileage plus a daily minimum, with offal haul-off as an option. Backyard Butchery’s $500/day minimum is what actually prices a single-head farm call. No Mid-Atlantic farm-kill operator publishes prices online; a scraped directory (Butcher Bud) lists about 30 “mobile” entries in Virginia, but most are fixed plants. Getting local prices means a phone survey (farm-kill table). Rough capital recovery: a $92k rig over 7 years is about $13k/yr before interest, or about $44/head at 300 head/yr and about $26/head at 500.
Kill-and-cut units (round 3)
If the unit also cuts and packages (the chosen model), the options are Sentinel’s 53 ft semi from $300,000 with an 18 ft butcher room, or Mobile Processing Trailers & Supply turnkey goosenecks (38–44 ft, quote only). The 2020 VAFAIRS review put mobile-unit start-up “under $250,000” (Matson). See Cooler-Backed Mobile Model.
Insurance
- Workers’ comp is rated by job code, and a farm-kill crew fits NCCI 2081 Butchering, the most expensive meat code. Example rates (Iowa, 2009): $10.89 per $100 of payroll for 2081, against $3.37 for code 2089 Packing House (NMPAN).
- Other cover (liability, auto, cargo, spoilage, bailee) and dated benchmarks are in Insurance Benchmarks.
Gaps
- What Virginia, Maryland and West Virginia farm-kill operators charge. Round 3 confirmed none publish online. Phone leads: Mountain Man Custom Butchering (Orrstown, PA) and Homestead Butchering (Richland, PA).
- Crew size and head per day for custom-exempt rigs.
- Boom-truck or truck-mounted hoist builders and prices, as an alternative to a trailer.
- Virginia premiums for NCCI 2081, liability and auto in 2026. Not found in round 3; needs agent quotes.