Bourges Teknival on a Live DGA Firing Range: Two Render-Safe Operations During Mass Civilian Trespass

Technical Summary

Between Friday 1 May and Sunday 3 May 2026, an undeclared free party (“Teknival de Bourges”) occupied an active firing range belonging to the Direction générale de l’armement (DGA) in the Cher département, central France. The Cher prefecture confirmed that 17,000–20,000 attendees were present from Friday morning, with the on-site Tekno Anti Rep collective reporting a peak crowd of approximately 40,000 by Saturday evening. The DGA range — in continuous use as a munitions test and proof firing facility for over a century — carries a documented unexploded ordnance (UXO) hazard concentrated in the wooded sectors that the prefecture had publicly designated “high risk” in its 1 May warning notice.

Two render-safe procedures (RSP) were conducted by DGA explosive ordnance disposal (EOD) specialists during the event. The first intervention took place on the evening of Saturday 2 May after a single unexploded artillery projectile was located on the verge of a road bisecting the rave site. A second projectile was confirmed by the prefecture as “in the process of being dealt with” in the same statement. French Interior Minister Laurent Nuñez visited the perimeter on Sunday 3 May; gendarmerie issued 600 citations for trespass on military property and participation in an illegal gathering, with departing attendees subject to two compounded offences each. No casualties from UXO were reported as of 3 May 2026.

Twenty thousand to forty thousand civilians spent three days on a century-old DGA firing range carrying live World War-era UXO. Two unexploded shells were render-safe by DGA EOD specialists during the event itself, and 600 trespass citations were issued by gendarmerie. Cher prefecture statement and Ministry of the Interior briefing, 2–3 May 2026

Analysis of Effects

Without published photographs of the recovered ordnance the type cannot be conclusively identified, but the prefecture’s reference to early-twentieth-century French military use places the most likely candidates as French 75 mm Mle 1897 high-explosive (HE) shrapnel or HE-fragmentation projectiles, 105 mm Mle 1913 HE rounds, or German Wehrmacht 105 mm leFH 18 / 150 mm sFH 18 HE rounds left behind from World War II proof firing or salvage. Typical filler is TNT (trinitrotoluene), Picric Acid (trinitrophenol) or Schneiderite (HE for early French rounds). Net Explosive Quantity (NEQ) for a 105 mm HE round is approximately 1.6–2.2 kg TNT-equivalent; for 150 mm HE, 5.0–6.5 kg. All such items, regardless of fuze status, fall within Hazard Division (HD) 1.1, Compatibility Group D (HE-filled, fuzed projectiles — STANAG 4123 / AASTP-1 Annex C).

The lethal radius (LR) for a single 105 mm HE projectile in surface-burst is conservatively 25–30 m, with casualty radius (CR) extending to 50–75 m for fragmentation effects through 5 mm of clothing. Pre-formed and natural fragmentation from the projectile body produces velocities in the 1,200–1,800 m/s range at burst. The peak side-on overpressure at 10 m from a 2 kg TNT-equivalent surface burst is approximately 350 kPa — well above the 70 kPa eardrum-rupture threshold and the 200 kPa lung-injury threshold. The recovered shells were located on a road verge bisecting the rave footprint; a sympathetic detonation initiated by vehicle compaction, generator vibration, or open-flame contact would have produced mass-casualty outcomes within the immediate dance area.

Personnel and Safety Considerations

DGA EOD operates under the French Code de la Défense and the inter-ministerial procedure for clearance of conventional munitions on military estate. Render-safe procedures on legacy French/German HE projectiles in unprepared field conditions typically follow the IATG 10.10 (International Ammunition Technical Guidelines) sequence: positive identification, fuze-state assessment (armed/safe/unknown), exclusion zone establishment based on fragmentation distance (FD) and inhabited-building distance (IBD), and either in-situ disposal by counter-charge (block of plastic explosive, typically C-4 or P4 with shock-tube initiation) or, where the round is judged stable, controlled relocation. The minimum cordon distance under IATG for a 105 mm HE round is 320 m for unprotected personnel; the Bourges intervention took place inside an ad-hoc cordon with tens of thousands of civilians at substantially closer range, which constitutes a major departure from ALARP (As Low As Reasonably Practicable) doctrine.

The DGA range itself is the largest French armament-test estate in continuous service; comparable UK practice (DSA 03.OME, JSP 482) requires that proof-fired ranges of this vintage be assessed against UXO Risk Categories 1–4 with documented residual-risk ledgers. The fact that 20,000–40,000 civilians could enter a Risk Category 1 area without a physical-barrier failure being formally declared by the responsible authority indicates that perimeter security on the DGA Bourges range was either materially absent or was bypassed in volume that gendarmerie could not contain without lethal force.

Data Gaps

DATA GAP: Ordnance identification — calibre, country of manufacture, fuze type, and filler of the two recovered projectiles have not been published.

DATA GAP: Cordon distance — the actual exclusion radius established for the two render-safe operations is not stated in the prefecture release.

DATA GAP: Disposal method — whether DGA EOD conducted in-situ counter-charge disposal or controlled relocation is not specified.

DATA GAP: Total UXO inventory — the wider UXO contamination level across the DGA Bourges estate has not been disclosed by either DGA or the Ministry of the Armed Forces.

DATA GAP: Inter-agency notification — the chain of communication between DGA range security, the Cher prefecture, gendarmerie and the Ministry of the Interior between Friday morning and Saturday evening is not yet on the public record.

AI-assisted technical assessment based on open-source material. Not a formal intelligence product. Image attribution noted where applicable.