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hydrogen sulfide death in an underground mine 1973
Bookmarked 710 weeks ago hydrogen sulfide occurs naturally and is also produced by human activities just a few breaths of air containing high levels of hydrogen sulfide gas can cause death lower longer-term exposure can cause eye irritation headache and fatigue for more on hydrogen sulfide go to the atsdr website at http:wwwatsdrcdcgovtfacts114htmlbookmark01 this is clipped from the 1973 bureau of mines film breathe and live: ventilation in metal and nonmetal mines 21 minutes |
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milo miles got the job thanks to his big dick and bareback skills
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amanda clarke monroe fox - girlfriend material amanda clarke
Bookmarked 39 weeks ago watch amanda clarke monroe fox - girlfriend material amanda clarke 2023 runtime: 21:29 categories: anal threesome pov amanda clarke monroe fox lifeselector girlfriend material amanda clarke pov anal russian threesome bgg mff hornyhill hornyhillse |
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top 5 interesting camera gadgets for photography lovers 1
Bookmarked 488 weeks ago subscribe to the future is now https:googl1ckpbktop 5 interesting camera gadget for photography lovers: https:wwwyoutubecomwatchv=kj7em2wijgq1 - luna 360 http:googl3qkx4q2 - pixio http:googlrs7g9z3 - turnspro http:googl05lkbt4 - bw05 stabilizer kit http:googlw6doyx5 - the agua https:googldq4qauwhat039s photography: photography is the science art and practice of creating durable images by recording light or other electromagnetic radiation either electronically by means of an image sensor or chemically by means of a light-sensitive material such as photographic filmtypically a lens is used to focus the light reflected or emitted from objects into a real image on the light-sensitive surface inside a camera during a timed exposure with an electronic image sensor this produces an electrical charge at each pixel which is electronically processed and stored in a digital image file for subsequent display or processing the result with photogr |
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icynene-lapolla spray foam insulation a lifetime of energy savings and comfort
Bookmarked 410 weeks ago http:showroompartnerscom when it comes to insulation for your home a great investment is choosing spray foam insulation it lasts it won039t sag or settle and unlike most traditional insulation materials it provides an air barrier reducing air leakage visit showroom partners online for further information |
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breeding material ashlyn angel amp bunny fae: i couldnt hold it breeding my girlfriends bff pervy videos x
Bookmarked 47 weeks ago breeding material ashlyn angel amp bunny fae: i couldnt hold it breeding my girlfriends bff pervy videos x |
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mathew figata wanted to take things slow and instead started giving his boy a soft ri
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tucker barett wanks his horny little twink son
Bookmarked 38 weeks ago watch tucker barett wanks his horny little twink son |
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using lasers to create super-hydrophobic materials
Bookmarked 564 weeks ago scientists at the university of rochester have used lasers to transform metals into extremely water repellent or super-hydrophobic materials without the need for temporary coatings super-hydrophobic materials are desirable for a number of applications such as rust prevention anti-icing or even in sanitation uses however as rochesters chunlei guo explains most current hydrophobic materials rely on chemical coatings in a paper http:scitationaiporgcontentaipjournaljap117310106314905616 published today in journal of applied physics guo and his colleague at the universitys institute of optics anatoliy vorobyev describe a powerful and precise laser-patterning technique that creates an intricate pattern of micro- and nanoscale structures to give the metals their new properties this work builds on earlier research by the team in which they used a similar laser-patterning technique that turned metals black http:wwwrochesteredunewsshowphpid=2701 guo states that using this technique they can create multifunctional surfaces that are not only super-hydrophobic but also highly-absorbent opticallyguo adds that one of the big advantages of his teams process is that the structures created by our laser on the metals are intrinsically part of the material surface that means they wont rub off and it is these patterns that make the metals repel waterthe material is so strongly water-repellent the water actually gets bounced off then it lands on the surface again gets bounced off again and then it will just roll off from the surface said guo professor of optics at the university of rochester that whole process takes less than a second the materials guo has created are much more slippery than teflona common hydrophobic material that often coats nonstick frying pans unlike guos laser-treated metals the teflon kitchen tools are not super-hydrophobic the difference is that to make water to roll-off a teflon coated material you need to tilt the surface to nearly a 70-degree angle before the water begins to slide off you can make water roll off guos metals by tilting them less than five degreesas the water bounces off the super-hydrophobic surfaces it also collects dust particles and takes them along for the ride to test this self-cleaning property guo and his team took ordinary dust from a vacuum cleaner and dumped it onto the treated surface roughly half of the dust particles were removed with just three drops of water it took only a dozen drops to leave the surface spotless better yet it remains completely dry guo is excited by potential applications of super-hydrophobic materials in developing countries it is this potential that has piqued the interest of the bill and melinda gates foundation which has supported the work in these regions collecting rain water is vital and using super-hydrophobic materials could increase the efficiency without the need to use large funnels with high-pitched angles to prevent water from sticking to the surface says guo a second application could be creating latrines that are cleaner and healthier to uselatrines are a challenge to keep clean in places with little water by incorporating super-hydrophobic materials a latrine could remain clean without the need for water flushing but challenges still remain to be addressed before these applications can become a reality guo states it currently takes an hour to pattern a 1 inch by 1 inch metal sample and scaling up this process would be necessary before it can be deployed in developing countries the researchers are also looking into ways of applying the technique to other non-metal materials guo and vorobyev use extremely powerful but ultra-short laser pulses to change the surface of the metals a femtosecond laser pulse lasts on the order of a quadrillionth of a second but reaches a peak power equivalent to that of the entire power grid of north america during its short burstguo is keen to stress that this same technique can give rise to multifunctional metals metals are naturally excellent reflectors of light thats why they appear to have a shiny luster turning them black can therefore make them very efficient at absorbing light the combination of light-absorbing properties with making metals water repellent could lead to more efficient solar absorbers solar absorbers that dont rust and do not need much cleaningguos team had previously blasted materials with the lasers and turned them hydrophilic meaning they attract water in fact the materials were so hydrophilic that putting them in contact with a drop of water made water run uphill http:wwwrochesteredunewsshowphpid=3387help us caption ampamp translate this videohttp:amaraorgvga08 |
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attract true love glide with ease guided love meditation
Bookmarked 608 weeks ago attract true love glide with ease guided love meditationraise your vibe here - http:tinyurlcomspottydoggloveorabovestep one on the path of true love is to use affirmations you may be saying quoti already know this what039s the secret herequot the secret is to remember why and how affirmations work when you have a thought andor when you speak your words and thoughts go out into the universe and collect like energy they keep attracting energy and then come back to you with that energy multiplied the result the conditions in your life and your experiences not only that but your words have a vibration negative words and phrases carry a lower vibration and positive words and phrases carry a higher vibration so you can see that affirmations are much more than positive thinking they are powerful attractors of what you wantand don039t wantin your lifestep two for attracting a soulmatethe next powerful step in attracting your soulmate is to raise your vibration the key to finding true love is to keep that vibration high we operate on a frequency and when our vibration raises we are more attuned to the spiritual realm we can more clearly hear see and feel angels and celestial beings who will whisper instructions in your ear or your heart to unite you with a soul mate please listen to these instructions as they will come more frequently as you live a more spiritual life when you live from this quickened state you are a magnet for love because you radiate peace love and joyraise your vibe here - http:tinyurlcomspottydoggloveorabovelinks-http:thespottydoggblogspotcomhttps:wwwfacebookcomthespottydogghttp:thespottydogg-reviewstumblrcomhttp:gplustothespottydogghttp:wwwyoutubecomsubscription_centeradd_user=thespottydoggfor collaborations and business inquiries please contact via channel pages: http:channelpagescomthespottydoggquotfair usequot is a limitation and exception to the exclusive right granted by copyright law to the author of a creative work in united states copyright law fair use is a doctrine that permits limited use of copyrighted material without acquiring permission from the rights holders examples of fair use include commentary search engines criticism parody news reporting research teaching library archiving and scholarship it provides for the legal unlicensed citation or incorporation of copyrighted material in another author039s work |
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he rubbed his t-dick while jay lubed up his thickening cock for a breeding session th
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the dilf mr reece scott eased his massive and hardon cock-head against his son
Bookmarked 38 weeks ago watch the dilf mr reece scott eased his massive and hardon cock-head against his son |
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diion slams his dick on maxwell dawson
Bookmarked 37 weeks ago watch diion slams his dick on maxwell dawson |