has in his possession or custody, or under his control, any still or distilling apparatus set up which is not registered, as required by section 5179(a); or
uses, or possesses with intent to use, any still, boiler, or other utensil for the purpose of producing distilled spirits, or aids or assists therein, or causes or procures the same to be done, in any dwelling house, or in any shed, yard, or inclosure connected with such dwelling house (except as authorized under section 5178(a)(1)(C)), or on board any vessel or boat, or on any premises where beer or wine is made or produced, or where liquors of any description are retailed, or on premises where any other business is carried on (except when authorized under section 5178(b)); or
except as otherwise provided in this chapter, makes or ferments mash, wort, or wash, fit for distillation or for the production of distilled spirits, in any building or on any premises other than the designated premises of a distilled spirits plant lawfully qualified to produce distilled spirits, or removes, without authorization by the Secretary, any mash, wort, or wash, so made or fermented, from the designated premises of such lawfully qualified plant before being distilled; or
after the time fixed in the notice given under section 5221(a) to suspend operations as a distiller, carries on the business of a distiller on the premises covered by the notice of suspension, or has mash, wort, or beer on such premises, or on any premises connected therewith, or has in his possession or under his control any mash, wort, or beer, with intent to distill the same on such premises; or
withdraws, uses, sells, or otherwise disposes of distilled spirits produced under section 5181 for other than fuel use;
Whenever on trial for violation of subsection (a)(4) the defendant is shown to have been at the site or place where, and at the time when, the business of a distiller or processor was so engaged in or carried on, such presence of the defendant shall be deemed sufficient evidence to authorize conviction, unless the defendant explains such presence to the satisfaction of the jury (or of the court when tried without jury).