The cattle wouldn’t go anywhere near the Revolution Square, today’s Place de la Concorde: 2 625 people, butchered on the same spot, have saturated the ground with blood. The team of five executioners (Charles-Henry Sanson, 53 years old, sons et al) worked non-stop, dispatching in less than 3 minutes a couple of people. The paperwork and the transport from Conciergerie to the guillotine took most of their time.
Nationally the days of Terror are accountable for 16 600 lives. In Versailles Louis-Cyr-Charlemagne Sanson, the brother of Charles-Henry Sanson, died from stress at the Queen’s Stables(1). His replacement on the scaffolds, Louis Dupuy, showed a more compassionate countenance, mostly due to his unattended hernia and a complete absence of workman’s compensation for those injured on the job.
In the end a complete amateur, Jean Boursier, was put in charge of the local death machine. The contraption being exceedingly simple, no special training was required for its operation. In Paris Charles-Henry Sanson allowed the youngest in his family to do the release of the blade. Perhaps this is why Louis XVI’s head was sliced from the occiput to the maxilla, leaving the lower jaw attached to the neck.
See also on the subject of Toys of the Revolution
(1) During the Revolution the Queen’s Stables are converted into a prison.