| «URALMEKHANOBR» JSC |
| Название |
Mikhail F. Ortin—founder of the Uralmekhanobr Institute |
| Автор |
Nesterov A. G. |
| Информация об авторе |
Author:
Name & Surname: Nesterov A. G. Company: Ural Federal University named after First President of Russia B. N. Eltsin (Ekaterinburg, Russia) Work Position: Head of a Chair Scientific Degree: Professor, Doctor of Historical Sciences Contacts: e-mail: agn1154@yandex.ru |
| Название |
Uralmekhanobr institute and
the mineral processing science and industry advance |
| Авторы |
Nesterov G. S., Gazaleeva G. S., Nesterov A. G. |
| Информация об авторах |
Author 1:
Name & Surname: Nesterov G. S. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Consultant Scientific Degree: Candidate of Engineering Sciences Contacts: e-mail: gsnesterov@yandex.ru
Author 2:
Name & Surname: Gazaleeva G. S. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Deputy Director for Science Scientific Degree: Doctor of Engineering Sciences Contacts: e-mail: gazaleeva@umbr.ru
Author 3:
Name & Surname: Nesterov A. G. Company: Ural Federal University named after the first President of Russia B. N. Eltsin (Ekaterinburg, Russia) Work Position: Head of a Chair Scientific Degree: Doctor of Historical Sciences Contacts: e-mail: agn1154@yandex.ru |
| Название |
The main development directions
of sintering production and science in the works of "Uralmekhanobr" Institute |
| Авторы |
Nesterov G. S., Nesterov A. G. |
| Информация об авторах |
Author 1:
Name & Surname: Nesterov G. S. Company: "Uralmekhanobr" JSC (Ekaterinburg, Russia) Work Position: Consultant Scientific Degree: Candidate of Engineering Sciences
Author 2:
Name & Surname: Nesterov A. G. Company: Ural State Federal University named after B. N. Eltsin, the First Russian President (Ekaterinburg, Russia) Work Position: Head of the Chair Scientific Degree: Doctor of Historical Sciences Contacts: e-mail: agn1154@yandex.ru |
| Название |
Selection of limit grain size in
processing of quartz–feldspathic–kaolin raw material from the Bisembaev
deposit |
| Авторы |
Shikhov N. V., Shigaeva V. N., Nazarenko L. N. |
| Информация об авторах |
Author 1:
Name & Surname: Shikhov N. V. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Deputy Head of Dressing Department Scientific Degree: Candidate of Engineering Sciences Contacts: e-mail: umbr@umbr.ru
Author 2:
Name & Surname: Shigaeva V. N. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Junior Researcher
Author 3:
Name & Surname: Nazarenko L. N. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Researcher |
| Название |
Dressing technology for Tebinbulak iron ore |
| Авторы |
Gazaleeva G. I., Sopina N. A., Mushketov A. A. |
| Информация об авторах |
Author 1:
Name & Surname: Gazaleeva G. I. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Deputy General Director for Science Scientific Degree: Doctor of Engineering Sciences Contacts: e-mail: umbr@umbr.ru
Author 2:
Name & Surname: Sopina N. A. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Chief Dresser
Author 3:
Name & Surname: Mushketov A. A. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Junior Researcher |
| Название |
Use of polymethylene
naphthalenesulfonate as a depressing agent for zinc minerals in complex ore
flotation |
| Авторы |
Averbukh A. V., Orlov S. L., Stikhina M. I. |
| Информация об авторах |
Author 1:
Name & Surname: Averbukh A. V. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Chief Dresser Contacts: e-mail: umbr@umbr.ru
Author 2:
Name & Surname: Orlov S. L. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Head of a Department Scientific Degree: Candidate of Engineering Sciences
Author 3:
Name & Surname: Stikhina M. I. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Researcher |
| Название |
Analysis of agglomeration of Tebinbulak titano-magnetite ore concentrates |
| Авторы |
Peshkin D. S., Dmitrieva E. G., Bratygin E. V. |
| Информация об авторах |
Author 1:
Name & Surname: Peshkin D. S. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Junior Researcher Contacts: e-mail: umbr@umbr.ru
Author 2:
Name & Surname: Dmitrieva E. G. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Senior Researcher Scientific Degree: Candidate of Engineering Sciences
Author 3:
Name & Surname: Bratygin E. V. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Head of a Laboratory Scientific Degree: Candidate of Engineering Sciences |
| Название |
Full extraction of copper–
sulphide ore reserves in walls and bottom of Sibaisky open-pit mine |
| Авторы |
Koltsov P. V., Ivanov Yu. S., Andreeva O. N. |
| Информация об авторах |
Author 1:
Name & Surname: Koltsov P. V. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Head of Pitwall Stability Laboratory Scientific Degree: Candidate of Engineering Sciences Contacts: e-mail: kpavel@mail.umbr.ru
Author 2:
Name & Surname: Ivanov Yu. S. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Principal Researcher Contacts: e-mail: ivanov_us@umbr.ru
Author 3:
Name & Surname: Andreeva O. N. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Senior Researcher Contacts: e-mail: golovina_on@umbr.ru |
| Название |
Geomechanical substantiation of
chequered room-and-pillar mining with backfilling |
| Авторы |
Dik Yu. A., Kotenkov A. V., Tankov M. S. |
| Информация об авторах |
Author 1:
Name & Surname: Dik Yu. A. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Head of a Department Scientific Degree: Candidate of Engineering Sciences Contacts: e-mail: dik@umbr.ru
Author 2:
Name & Surname: Kotenkov A. V. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Deputy Head of a Department Contacts: e-mail: gpgr@umbr.ru
Author 3:
Name & Surname: Tankov M. S. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Head of a Laboratory Contacts: e-mail: tankov_ms@umbr.ru |
| Название |
Risk minimization in mine-technical
system with closed air space |
| Авторы |
Minin V. V., Piankov D. A., Kotenkov A. V. |
| Информация об авторах |
Author 1:
Name & Surname: Minin V. V. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Head of Mine Roadway Ventilation Department, Corresponding Member of the International Academy of Sciences on Ecology and Safe Life Activity, Assistant Professor Scientific Degree: Candidate of Engineering Sciences Contacts: e-mail: minin_vv@umbr.ru
Author 2:
Name & Surname: Piankov D. A. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Principal Engineer of Air-Gate Department Contacts: e-mail: piankov_da@umbr.ru
Author 3:
Name & Surname: Kotenkov A. V. Company: Uralmekhanobr JSC (Ekaterinburg, Russia) Work Position: Deputy Head of Mining Science Department Contacts: e-mail: gpgr@umbr.ru |
| URAL STATE MINING UNIVERSITY |
| Название |
Forecasting the
structure, stress state parameters and stability of rock mass during
construction of underground facility |
| Авторы |
Pisetskiy V. B., Lapin E. S., Abaturova I. V., Zudilin A. E. |
| Информация об авторах |
Author 1:
Name & Surname: Pisetskiy V. B. Company: Ural State Mining University (Ekaterinburg, Russia) Work Position: Head of a Chair Scientific Degree: Professor, Doctor of Geological and Mineralogical Sciences Contacts: e-mail: pisetski@yandex.ru
Author 2:
Name & Surname: Lapin E. S. Company: Ural State Mining University (Ekaterinburg, Russia) Work Position: Head of a Chair Scientific Degree: Professor, Doctor of Engineering Sciences
Author 3:
Name & Surname: Abaturova I. V. Company: Ural State Mining University (Ekaterinburg, Russia) Work Position: Professor Scientific Degree: Professor, Doctor of Geological and Mineralogical Sciences
Author 4:
Name & Surname: Zudilin A. E. Company: Ural State Mining University (Ekaterinburg, Russia) Work Position: Associate Professor Scientific Degree: Candidate of Geological and Mineralogical Sciences |
| Название |
Equivalent heat model of
roller cone bit |
| Авторы |
Afanasiev A. I., Simisinov D. I., Shestakov V. S. |
| Информация об авторах |
Author 1:
Name & Surname: Afanasiev A. I. Company: Ural State Mining University (Ekaterinburg, Russia) Work Position: Professor Scientific Degree: Professor, Doctor of Engineering Sciences Contacts: e-mail: gmf.tm@ursmu.ru
Author 2:
Name & Surname: Simisinov D. I. Company: Ural State Mining University (Ekaterinburg, Russia) Work Position: Associate Professor Scientific Degree: Candidate of Engineering Sciences
Author 3:
Name & Surname: Shestakov V. S. Company: Ural State Mining University (Ekaterinburg, Russia) Work Position: Professor Scientific Degree: Professor, Candidate of Engineering Sciences |
| SCIENCE AND INDUSTRY |
| Название |
Theoretical and practical
problems of subsoil development under megacities |
| Авторы |
Kartoziya B. A., Korchak A. V., Levchenko A. N. |
| Информация об авторах |
Author 1:
Name & Surname: Kartoziya B. A. Company: Mining Institute of National University of Science and Technology MISiS (Moscow, Russia) Work Position: Professor Scientific Degree: Doctor of Engineering Sciences
Author 2:
Name & Surname: Korchak A. V. Company: Mining Institute of National University of Science and Technology MISiS (Moscow, Russia) Work Position: Professor Scientific Degree: Doctor of Engineering Sciences Contacts: e-mail: korchak@msmu.ru
Author 3:
Name & Surname: Levchenko A. N. Company: Mining Institute of National University of Science and Technology MISiS (Moscow, Russia) Work Position: Professor Scientific Degree: Doctor of Engineering Sciences |
| LEGAL REGULATION IN THE FIELD OF USAGE OF THE EARTH BOWELS |
| Название |
Coal industry safety: law and human factor (Interview with S. V. Shatirov, member
of Federation Council) |
| Название |
Investment climate optimization in gold
mining industry in terms of the subsoil use legislation development |
| Авторы |
Mirzekhanov G. S., Mirzekhanova Z. G. |
| Информация об авторах |
Author 1:
Name & Surname: Mirzekhanov G. S. Company: Institute of Mining, Far East Branch, Russian Academy of Sciences (Khabarovsk, Russia) Work Position: Leading Researcher Scientific Degree: Doctor of Geological and Mineralogical Sciences Contacts: e-mail: mgs_gold@mail.ru
Author 2:
Name & Surname: Mirzekhanova Z. G. Company: Institute of Water and Ecology Problems, Far East Branch, Russian Academy of Sciences (Khabarovsk, Russia) Work Position: Head of a Chair Scientific Degree: Doctor of Geographical Sciences |
| RAW MATERIAL BASE |
| Название |
Classification of kimberlite
deposits based on new analytical criteria |
| Авторы |
Akishev A. V., Kolganov V. F., Zyryanov I. V. |
| Информация об авторах |
Author 1:
Name & Surname: Akishev A. V. Company: Yakutniproalmaz Institute (Mirny, Russia) Work Position: Head of Department Scientific Degree: Candidate of Engineering Sciences Contacts: e-mail: AkishevAV@alrosa.ru
Author 2:
Name & Surname: Kolganov V. F. Company: Yakutniproalmaz Institute (Mirny, Russia) Work Position: Head of Laboratory Scientific Degree: Candidate of Geological and Mineralogical Sciences
Author 3:
Name & Surname: Zyryanov I. V. Company: Yakutniproalmaz Institute (Mirny, Russia) Work Position: Deputy Director for Science Scientific Degree: Doctor of Engineering Sciences |
| PHYSICS AND MECHANICS OF ROCKS |
| Название |
Application of acoustic emission
method to rockburst hazard forecasting |
| Авторы |
Aksenov A. A., Ozhiganov I. A., Isianov O. A. |
| Информация об авторах |
Author 1:
Name & Surname: Aksenov A. A. Company: VNIMI Institute, Ural Division (Ekaterinburg, Russia) Work Position: Head of a laboratory Scientific Degree: Candidate of Engineering Sciences Contacts: e-mail: gurvnimi@yandex.ru
Author 2:
Name & Surname: Ozhiganov I. A. Company: VNIMI Institute, Ural Division (Ekaterinburg, Russia) Work Position: Researcher
Author 3:
Name & Surname: Isianov O. A. Company: Priargunsky Mining-and-Chemical Works (Krasnokamensk, Russia) Work Position: Head of Engineering Office |
| Название |
X-ray computed tomography in the study of
physico-mechanical properties of rocks |
| Авторы |
Vaisberg L. A., Kameneva E. E. |
| Информация об авторах |
Author 1:
Name & Surname: Vaisberg L. A. Company: Mekhanobr-Tekhnika Research and Engineering Corporation (Saint-Petersburg, Russia) Work Position: Research Manager Scientific Degree: Professor, Doctor of Engineering Sciences, Corresponding Member of the Russian Academy of Sciences Contacts: e-mail: gornyi@mtspb.com
Author 2:
Name & Surname: Kameneva E. E. Company: Petrozavodsk State University (Petrozavodsk, Russia) Work Position: Assistant Professor Scientific Degree: Candidate of Engineering Sciences |
| MINE DESIGN AND CONSTRUCTION |
| Название |
Modern shaft freezing technology
implemented in two big shaft sinking projects with total 5 surface mine
shafts are being constructed |
| Авторы |
Tim van Heyden, Bjarn Vegner |
| Информация об авторах |
Thyssen Schachtbau GmbH (Germany):
Tim van Heyden, Head of a Project, Head of Rock Freezing Department, e-mail: vanHeyden.Tim@ts-gruppe.com Bjarn Vegner, Project Engineer |
| Название |
Forecasting reliability and endurance of
microtunnels |
| Авторы |
Kulikov Yu. N., Ivanov I. A. |
| Информация об авторах |
Author 1:
Name & Surname: Kulikov Yu. N. Company: Mining Institute of National University of Science and Technology MISiS (Moscow, Russia) Work Position: Professor Scientific Degree: Candidate of Engineering Sciences
Author 2:
Name & Surname: Ivanov I. A. Company: ALROSA (Moscow, Russia) Work Position: Academic Secretary, ALROSA President’s Council of Experts Scientific Degree: Candidate of Engineering Sciences Contacts: e-mail: i85@yandex.ru |
| ECONOMY, ORGANIZATION AND MANAGEMENT |
| Название |
Risk assessment procedure for economicgeological
and cost estimate of mineral deposits |
| Авторы |
Kotlyarov I. D., Petrov S. V. |
| Информация об авторах |
Author 1:
Name & Surname: Kotlyarov I. D. Company: National Research University Higher School of Economics (Saint-Petersburg, Russia) Work Position: Assistant Professor of Financial Markets and Financial Management Chair Scientific Degree: Candidate of Economic Sciences Contacts: e-mail: ivan.kotliarov@mail.ru
Author 2:
Name & Surname: Petrov S. V. Company: Saint-Petersburg State University (Saint-Petersburg, Russia) Work Position: Head of a Chair Scientific Degree: Candidate of Geological and Mineralogical Sciences |
| Название |
Analytical evaluation of investment
efficiency in mining projects |
| Авторы |
Kharitonov V. V., Kurelchuk U. N. |
| Информация об авторах |
Author 1:
Name & Surname: Kharitonov V. V. Company: National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) (Moscow, Russia) Work Position: Professor Scientific Degree: Doctor of Physico-Mathematical Sciences Contacts: e-mail: VVKharitonov@mephi.ru
Author 2:
Name & Surname: Kurelchuk U. N. Company: National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) (Moscow, Russia) Work Position: Magister |
| MINERAL MINING |
| Название |
Mining industry in the Far Eastern Federal District: State-of-the art |
| Автор |
Arkhipov G. I. |
| Информация об авторе |
Author:
Name & Surname: Arkhipov G. I. Company: Institute of Mining, Far East Branch, Russian Academy of Sciences (Khabarovsk, Russia) Work Position: Principal Researcher Scientific Degree: Candidate of Geological and Mineralogical Sciences Contacts: e-mail: arhipov@igd.khv.ru |
| Название |
Unified classification of hydraulicking methods |
| Авторы |
Yaltanets I. M., Bessonov E. A. |
| Информация об авторах |
Author 1:
Name & Surname: Yaltanets I. M. Company: Mining Institute of National University of Science and Technology MISiS (Moscow, Russia) Work Position: Professor Scientific Degree: Doctor of Engineering Sciences
Author 2:
Name & Surname: Bessonov E. A. Company: Mining Institute of National University of Science and Technology MISiS (Moscow, Russia) Work Position: Consultant Scientific Degree: Doctor of Engineering Sciences Contacts: e-mail: bessonov_ea@mail.ru |
| DRILLING-AND-BLASTING OPERATIONS |
| Название |
Experimental research and estimate of influence
of borehole charge design on seismic intensity of large-scale blasting
in open-pit coal mines in Vietnam |
| Автор |
Chan Kuang Hieu |
| Информация об авторе |
Author:
Name & Surname: Chan Kuang Hieu Company: Mining Institute of National University of Science and Technology MISiS (Moscow, Russia) Work Position: Postgraduate Contacts: e-mail: hieutgd@gmail.com |
| MINERAL PROCESSING AND COMPREHENSIVE UTILIZATION |
| Название |
Sink-float concentration of kyanite ore |
| Авторы |
Marchevskaya V. V., Mukhina T. N. |
| Информация об авторах |
Author 1:
Name & Surname: Marchevskaya V. V. Company: Mining Institute, Kola Science Center, Russian Academy of Sciences (Apatity, Russia) Work Position: Senior Researcher Scientific Degree: Candidate of Engineering Sciences Contacts: e-mail: vvm@goi.kolasc.net.ru
Author 2:
Name & Surname: Mukhina T. N. Company: Mining Institute, Kola Science Center, Russian Academy of Sciences (Apatity, Russia) Work Position: Divisional manager Scientific Degree: Candidate of Engineering Sciences |
| Название |
Marketable commodity recovery
from waste of hydrometallurgical production of tungsten oxide |
| Авторы |
Evdokimov S. I., Evdokimov V. S. |
| Информация об авторах |
Author 1:
Name & Surname: Evdokimov S. I. Company: North Caucasian Institute of Mining and Metallurgy (State Technological University) (Vladikavkaz, Russia) Work Position: Assistant Professor Scientific Degree: Candidate of Engineering Sciences Contacts: e-mail: eva-ser@mail.ru
Author 2:
Name & Surname: Evdokimov V. S. Company: GEOS Science and Production Ltd (Vladikavkaz, Russia) Work Position: Researcher |
| EQUIPMENT AND MATERIALS |
| Название |
Estimation of
vibration level and remaining life of reducing gears of BELAZ mine truck
motorized wheels |
| Авторы |
Ishin N. N., Goman A. M., Skorokhodov A. S., Trukhanov L. I. |
| Информация об авторах |
Author 1:
Name & Surname: Ishin N. N. Company: Joint Institution of Mechanical Engineering of the National Academy of Sciences of Belarus (Minsk, Belarus) Work Position: Deputy Director, Scientific and Technical Center for Mining Equipment Scientific Degree: Candidate of Engineering Sciences Contacts: e-mail: Nik_ishin@mail.ru
Author 2:
Name & Surname: Goman A. M. Company: Joint Institution of Mechanical Engineering of the National Academy of Sciences of Belarus (Minsk, Belarus) Work Position: Head of Department Scientific Degree: Candidate of Engineering Sciences
Author 3:
Name & Surname: Skorokhodov A. S. Company: Joint Institution of Mechanical Engineering of the National Academy of Sciences of Belarus (Minsk, Belarus) Work Position: Principal Researcher Scientific Degree: Candidate of Engineering Sciences
Author 4:
Name & Surname: Trukhanov L. I. Company: Management Company of BELAZ-HOLDING (Zhodino, Belarus) Work Position: Chief Designer |
| ENVIRONMENT PROTECTION |
| Название |
Regulations for
discharge of iron compounds in water bodies at mines |
| Авторы |
Miroshnichenko S. A., Lepekhin A. P., Bogomolov A. V. |
| Информация об авторах |
Author 1:
Name & Surname: Miroshnichenko S. A. Company: Mining Institute, Ural Branch, Russian Academy of Sciences (Perm, Russia) Work Position: Senior Researcher Scientific Degree: Candidate of Geological and Mineralogical Sciences Contacts: e-mail: kama2100@mail.ru
Author 2:
Name & Surname: Lepekhin A. P. Company: Mining Institute, Ural Branch, Russian Academy of Sciences (Perm, Russia) Work Position: Head of a laboratory Scientific Degree: Professor, Doctor of Geological and Mineralogical Sciences
Author 3:
Name & Surname: Bogomolov A. V. Company: Mining Institute, Ural Branch, Russian Academy of Sciences (Perm, Russia) Work Position: Engineer |
| Название |
Forecasting procedure for
ecological implications of underground coal mining in Russia |
| Авторы |
Kachurin N. M., Efimov V. I., Vorobev S. A. |
| Информация об авторах |
Author 1:
Name & Surname: Kachurin N. M. Company: Tula State University (Tula, Russia) Work Position: Head of Geotechnologies and Underground Construction Chair Scientific Degree: Professor, Doctor of Engineering Sciences
Contacts: e-mail: ecology@tsu.tula.ru
Author 2:
Name & Surname: Efimov V. I. Company: Mining Institute of National University of Science and Technology MISiS (Moscow, Russia) Work Position: Professor Scientific Degree: Doctor of Engineering Sciences
Author 3:
Name & Surname: Vorobev S. A. Company: Belgorod State University (Belgorod, Russia) Scientific Degree: Candidate of Engineering Sciences |
| Название |
Modeling of parameters of innovation water-protection measures
on the basis of industrial-technological indices
of coal mining at Vietnam enterprises |
| Авторы |
Goncharenko S. N., Le Binh Duong., Petrov M. V., Stoyanova I. A. |
| Информация об авторах |
Author 1:
Name & Surname: Goncharenko S. N. Company: National University of Science and Technology «MISiS» (Moscow, Russia) Work Position: Professor Scientific Degree: Professor, Doctor of Engineering Sciences Contacts: e-mail: gs16@mail.ru
Author 2:
Name & Surname: Le Binh Duong Company: National University of Science and Technology «MISiS» (Moscow, Russia) Work Position: Post-Graduate Student
Author 3:
Name & Surname: Petrov M. V. Company: JSC «TsNIEIugol» (Moscow, Russia) Work Position: Director
Author 4:
Name & Surname: Stoyanova I. A. Company: National University of Science and Technology «MISiS» (Moscow, Russia) Work Position: Professor Scientific Degree: Professor, Doctor of Economic Sciences |
| HISTORY OF MINING. CULTURE |
| Название |
Old mine workings in the northeast of the Salair
Ridge—Orientation cue for ore exploration in the 18th century |
| Авторы |
German P. V., Savelieva A. S. |
| Информация об авторах |
Author 1:
Name & Surname: German P. V. Company: Institute of Human Ecology, Siberian Branch, Russian Academy of Sciences (Kemerovo, Russia) Work Position: Senior Researcher Scientific Degree: Candidate of Historical Sciences Contacts: e-mail: lithos@mail.ru
Author 2:
Name & Surname: Savelieva A. S. Company: Institute of Human Ecology, Siberian Branch, Russian Academy of Sciences (Kemerovo, Russia) Work Position: Principal Engineer |