Adit

An adit (from Latin aditus, entrance) is an entrance to an underground mine which is horizontal or nearly horizontal, by which the mine can be entered, drained of water, ventilated, and minerals extracted at the lowest convenient level. Adits are also used to explore for mineral veins.

Construction

Adits are driven into the side of a hill or mountain, and are often used when an ore body is located inside the mountain but above the adjacent valley floor or coastal plain. In cases where the mineral vein outcrops at the surface, the adit may follow the lode or vein until it is worked out, in this case the adit is rarely straight. The use of adits for the extraction of ore is generally called drift mining.

Adits can only be driven into a mine where the local topography permits. There will be no opportunity to drive an adit to a mine situated on a large flat plain, for instance. Also if the ground is weak, the cost of shoring up a long adit may outweigh its possible advantages.

Access and ventilation

01 Gallery

01 Gallery (or Zero One Gallery) is a contemporary art gallery located in downtown Los Angeles, California, U.S., founded by art dealer and curator John Pochna. The gallery is known for its contributions to the lowbrow art movement, as it frequently exhibits pieces with heavy graffiti and street art influences. In April 2007, Pochna partnered with Brandon Coburn, and Jim Ulrich.

Founded in 1980 and christened Zero Zero by Pochna, the gallery was originally an after hours bar in Melrose. The gallery's current name derives from a conceptual understanding of the creative process. As Kyle Lina explains, "Zero is when there's nothing--one when there's something. The space between the zero and the one is the creative act".

Over time, 01 Gallery developed a long standing relationship with the Los Angeles punk community, as it has debuted bands such as The Screamers. As the gallery's clientele diversified, Pochna's aims for the gallery evolved. Pochna states, "[We're] not a punk rock gallery, not a graffiti art gallery, not a rebel gallery. Not any of those stupid names they used to call us."

Gallery 16

Gallery 16 is an art gallery located in San Francisco, California. It is owned by the San Francisco-based painter, Griff Williams. Since 1993, the gallery has exhibited the works of many influential contemporary artists including Margaret Kilgallen, Arturo Herrera, Michelle Grabner, and Mark Grotjahn.

Gallery 16 Editions

Gallery 16 Editions is the gallery's publishing program. It utilizes contemporary printmaking methods to create portfolios and artist books for many notable contemporary artists. Over the past decades, the label has produced such books as Barry Gifford's "Las Quatro Reinas", Prince Andrew Romanoff's "The Boy Who Would Be Tsar" ISBN 0977744221, Harrell Fletcher's "Jimmy F. Miles is a Boyfriend And A Girlfriend With Harrell Fletcher ISBN 097774423X, Colter Jacobsen's "Good Times: Bad Trips" with artist Scott Hewicker and Cliff Hengst ISBN 9780977744244.

External links

Coordinates: 37°46′52.8″N 122°23′43.7″W / 37.781333°N 122.395472°W / 37.781333; -122.395472

Petra Scharbach

Petra Scharbach, best known as Petra, is a German actress, model, singer and painter. She was sometimes credited as Petra Rockstar.

Born in Frankfurt, at 6 moved to Parma with her mother. In Italy, after having participated and won several beauty contests and worked as a model in local fashion shows, debuted in the mid-eighties as singer and softcore actress. In the same period she appeared on the cover of Playmen and of the French edition of Penthouse.

Then she worked for several years with the Riccardo Schicchi's agency Diva Futura and was the main actress in several softcore movies. After some years she left Rome and returned to Parma to host a sport program in TV Parma. During these years she was a protagonist of gossip columns for her relations with the Colombian football player Faustino Asprilla and with American actor Tony Curtis.

In the early 2000s she began a career as a body art painter.

References

External links

Petra, Majorca

Petra is a town and municipality on the Mediterranean island of Majorca, in the Spanish autonomous community of the Balearic Islands. "Petra" means "rock" in Latin.

Petra is the birthplace of St. Junípero Serra (1713-1784), a Franciscan friar who founded the first nine of 21 Spanish missions in California from San Diego to San Francisco.

External links

Petra, Pieria

Petra (Greek: Πέτρα) is a former municipality in Pieria regional unit, Greece. Since the 2011 local government reform it is part of the municipality Katerini, of which it is a municipal unit. The population was 4,888 in 2011. The seat of the municipality was in Milia. Petra is also the name of a small settlement that is within the boundaries of the municipal unit, that had a population of 37 in 2011.

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