Abstract: An electrically powered drilling rig, such as for slim hole drilling, includes a drilling floor positioned over a drilling well, a set of pieces of drilling equipment operable for drilling the well, a first enclosure being positioned remotely of the drilling well and at least one electric motor being housed within the first enclosure. The electric motor is operated to provide power to one or more of the set of pieces of drilling equipment. The electric motor is housed within the enclosure and is remote of the drilling well and provides a buffer therebetween to prevent sparks from reaching the drilling well, thereby decreasing a fire hazard. The electric motor may be powered by a mobile battery pack. The electric motor may power a hydraulic pump, which further provides hydraulic fluid under pressure to the pieces of drilling equipment.

Abstract: An electrically powered drilling rig, such as for slim hole drilling, includes a drilling floor positioned over a drilling well, a set of pieces of drilling equipment operable for drilling the well, a first enclosure being positioned remotely of the drilling well and at least one electric motor being housed within the first enclosure. The electric motor is operated to provide power to one or more of the set of pieces of drilling equipment. The electric motor is housed within the enclosure and is remote of the drilling well and provides a buffer therebetween to prevent sparks from reaching the drilling well, thereby decreasing a fire hazard. The electric motor may be powered by a mobile battery pack. The electric motor may power a hydraulic pump, which further provides hydraulic fluid under pressure to the pieces of drilling equipment.

Abstract: An electrically powered drilling rig, such as for slim hole drilling, includes a drilling floor positioned over a drilling well, a set of pieces of drilling equipment operable for drilling the well, a first enclosure being positioned remotely of the drilling well and at least one electric motor being housed within the first enclosure. The electric motor is operated to provide power to one or more of the set of pieces of drilling equipment. The electric motor is housed within the enclosure and is remote of the drilling well and provides a buffer therebetween to prevent sparks from reaching the drilling well, thereby decreasing a fire hazard. The electric motor may be powered by a mobile battery pack. The electric motor may power a hydraulic pump, which further provides hydraulic fluid under pressure to the pieces of drilling equipment.

Abstract: Novel biaromatic compounds having the structural formula (I): have a selective agonist activity with respect to the RAR-gamma receptor and are useful for combating skin aging and for treating, e.g., cell differentiation or proliferation disorders, pathologies related to keratinization disorders, acne and psoriasis.

Abstract: A complex based on anthralin and a sterol, characterized in that its melting point is 10 to 25 degrees Celsius lower than that of the constituent of the complex melting at the lowest temperature and that the proportion of anthralin varies between 10 and 90 mol %.