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- 19:27, 9 February 2024 diff hist -17 m design to cost →Skylon Ozone damage (NOx) current Tag: Visual edit
- 02:14, 8 December 2022 diff hist +31 UpLift →plus a bit on Mining Asteroids current
- 01:34, 8 December 2022 diff hist +17 UpLift →plus a bit on Mining Asteroids
- 21:17, 5 December 2022 diff hist -3 UpLift →On the cavernous hangar deck of the former aircraft carrier Enterprise Tag: Visual edit: Switched
- 20:44, 5 December 2022 diff hist +1 m UpLift Tag: Visual edit
- 20:38, 5 December 2022 diff hist +9 m UpLift →A story of Space Elevators and Power Satellites Tag: Visual edit
- 20:29, 5 December 2022 diff hist +1 m UpLift →On the cavernous hangar deck of the former aircraft carrier Enterprise Tag: Visual edit
- 18:00, 5 December 2022 diff hist +2 m UpLift →plus a bit on Mining Asteroids Tag: Visual edit
- 06:36, 5 December 2022 diff hist -8 m UpLift →A story of Space Elevators and Power Satellites Tag: Visual edit
- 04:11, 24 November 2022 diff hist -12 m Cheap synthetic fuel a few changes after a long time current Tag: Visual edit
- 02:57, 28 July 2022 diff hist -22 User talk:Hkhenson current
- 01:23, 19 June 2022 diff hist +34 m design to cost →Other links: broken link fix
- 05:44, 13 May 2022 diff hist +135 m Cheap synthetic fuel notes and minor fixes Tag: Visual edit
- 20:22, 11 May 2022 diff hist +15 Cheap synthetic fuel
- 20:20, 11 May 2022 diff hist +7 Cheap synthetic fuel
- 17:20, 25 October 2021 diff hist +39 Cheap synthetic fuel
- 02:59, 11 September 2021 diff hist +8 m Cheap synthetic fuel cleanup Tag: Visual edit
- 02:53, 11 September 2021 diff hist -579 m Cheap synthetic fuel Cleanup Tag: Visual edit
- 21:40, 10 September 2021 diff hist +10 m Cheap synthetic fuel ckeanup Tag: Visual edit
- 15:46, 9 September 2021 diff hist +1 m Cheap synthetic fuel added space Tag: Visual edit
- 17:15, 6 September 2021 diff hist +38 Cheap synthetic fuel
- 16:06, 30 August 2021 diff hist +49 Cheap synthetic fuel
- 18:20, 2 July 2021 diff hist +1 Cheap synthetic fuel
- 01:31, 26 June 2021 diff hist +1 UpLift →A story of Space Elevators and Power Satellites
- 05:24, 25 June 2021 diff hist 0 Cheap synthetic fuel
- 15:57, 24 June 2021 diff hist +118 Cheap synthetic fuel
- 15:52, 24 June 2021 diff hist +139 Cheap synthetic fuel
- 22:40, 23 June 2021 diff hist +54 Cheap synthetic fuel
- 21:08, 23 June 2021 diff hist +336 Cheap synthetic fuel
- 05:18, 23 June 2021 diff hist +328 Cheap synthetic fuel
- 04:07, 23 June 2021 diff hist +708 Cheap synthetic fuel
- 02:26, 23 June 2021 diff hist +101 Cheap synthetic fuel
- 22:17, 22 June 2021 diff hist +92 Cheap synthetic fuel
- 18:48, 22 June 2021 diff hist -82 Cheap synthetic fuel
- 17:09, 22 June 2021 diff hist 0 Cheap synthetic fuel
- 19:57, 21 June 2021 diff hist 0 Cheap synthetic fuel
- 19:51, 21 June 2021 diff hist +172 Cheap synthetic fuel
- 17:31, 21 June 2021 diff hist +135 Cheap synthetic fuel
- 17:08, 21 June 2021 diff hist +78 Cheap synthetic fuel
- 16:48, 21 June 2021 diff hist +63 Cheap synthetic fuel
- 16:29, 21 June 2021 diff hist +2 Cheap synthetic fuel
- 06:06, 21 June 2021 diff hist +132 Cheap synthetic fuel
- 05:58, 21 June 2021 diff hist +109 Cheap synthetic fuel
- 05:43, 21 June 2021 diff hist +277 Cheap synthetic fuel
- 02:13, 20 June 2021 diff hist 0 Cheap synthetic fuel Tag: Visual edit: Switched
- 00:35, 8 June 2021 diff hist +2 Cheap synthetic fuel
- 00:34, 8 June 2021 diff hist +78 Cheap synthetic fuel
- 00:26, 8 June 2021 diff hist -2,817 Cheap synthetic fuel
- 22:37, 7 June 2021 diff hist -3 Cheap synthetic fuel
- 16:23, 7 June 2021 diff hist +146 Cheap synthetic fuel
- 04:12, 7 June 2021 diff hist +122 Cheap synthetic fuel
- 03:23, 7 June 2021 diff hist -58 Cheap synthetic fuel
- 03:14, 7 June 2021 diff hist 0 Cheap synthetic fuel
- 20:19, 6 June 2021 diff hist +61 Cheap synthetic fuel
- 20:08, 6 June 2021 diff hist +145 Cheap synthetic fuel
- 19:17, 6 June 2021 diff hist +392 Cheap synthetic fuel
- 22:27, 5 June 2021 diff hist 0 Cheap synthetic fuel
- 23:43, 4 June 2021 diff hist -645 Cheap synthetic fuel
- 19:48, 4 June 2021 diff hist +320 Cheap synthetic fuel
- 15:49, 4 June 2021 diff hist +303 Cheap synthetic fuel
- 01:37, 4 June 2021 diff hist +612 Cheap synthetic fuel
- 23:09, 3 June 2021 diff hist +589 Cheap synthetic fuel
- 22:09, 3 June 2021 diff hist +106 Cheap synthetic fuel
- 17:10, 3 June 2021 diff hist +168 Cheap synthetic fuel
- 18:42, 1 June 2021 diff hist -65 Cheap synthetic fuel
- 18:12, 1 June 2021 diff hist +85 Cheap synthetic fuel
- 17:13, 1 June 2021 diff hist +440 Cheap synthetic fuel
- 19:32, 31 May 2021 diff hist +1 Cheap synthetic fuel
- 19:06, 31 May 2021 diff hist +13 Cheap synthetic fuel
- 01:22, 30 May 2021 diff hist +9 Cheap synthetic fuel
- 01:09, 30 May 2021 diff hist +389 Cheap synthetic fuel
- 00:42, 30 May 2021 diff hist +97 Cheap synthetic fuel
- 23:58, 29 May 2021 diff hist +171 Cheap synthetic fuel
- 23:25, 29 May 2021 diff hist +132 Cheap synthetic fuel
- 22:04, 29 May 2021 diff hist +120 Cheap synthetic fuel
- 21:57, 29 May 2021 diff hist +123 Cheap synthetic fuel
- 19:45, 29 May 2021 diff hist +9 Cheap synthetic fuel
- 17:51, 29 May 2021 diff hist +66 Cheap synthetic fuel
- 06:41, 29 May 2021 diff hist +1 Cheap synthetic fuel
- 06:40, 29 May 2021 diff hist +378 Cheap synthetic fuel
- 01:15, 29 May 2021 diff hist +28 Cheap synthetic fuel
- 22:25, 28 May 2021 diff hist +1,279 Cheap synthetic fuel
- 01:53, 27 May 2021 diff hist +71 m Cheap synthetic fuel
- 01:45, 26 May 2021 diff hist +132 Cheap synthetic fuel
- 20:42, 16 May 2021 diff hist +252 m Cheap synthetic fuel intro Tag: Visual edit
- 03:53, 7 May 2021 diff hist +4,205 N Cheap synthetic fuel Created page with " There are two recent news stories that started this line of thinking. First is the recent MIT release on a method to inexpensively capture CO2. https://news.mit.edu/2019/mi..."
- 23:43, 12 September 2020 diff hist +16 m design to cost →Fast links to Power Satellite topics
- 17:53, 3 August 2020 diff hist +13 UpLift
- 15:51, 3 August 2020 diff hist 0 Standard gauge current
- 15:49, 3 August 2020 diff hist +186 Standard gauge
- 01:29, 28 July 2020 diff hist +79 Standard gauge
- 01:23, 28 July 2020 diff hist +12,101 N Standard gauge Created page with "I am unlikely fo finish this set of stories. None of them have a story arc. They were mainly a way to hang speculations about what future technology might do to humanity...."
- 03:55, 19 June 2020 diff hist +49 design to cost →Space Farm Paper from 1975
- 03:51, 19 June 2020 diff hist 0 design to cost →Space Farm Paper from 1975
- 02:40, 19 June 2020 diff hist 0 N File:space farm graphic.png current
- 02:37, 19 June 2020 diff hist +33 m design to cost →Space Farm Paper from 1975
- 00:29, 2 October 2019 diff hist +6 m Mining Asteroids →Mining asteroids by Keith Henson current
- 05:01, 18 September 2019 diff hist +2 Darwin's difficulty current
- 04:57, 18 September 2019 diff hist +9 Darwin's difficulty
- 04:48, 18 September 2019 diff hist +34 Darwin's difficulty
- 04:41, 18 September 2019 diff hist -267 Darwin's difficulty
- 04:17, 18 September 2019 diff hist -47 Darwin's difficulty
- 04:11, 18 September 2019 diff hist +2 Darwin's difficulty
- 04:09, 18 September 2019 diff hist +11 Darwin's difficulty
- 04:06, 18 September 2019 diff hist +1 Darwin's difficulty
- 03:57, 18 September 2019 diff hist +23,191 N Darwin's difficulty Historical memetics article
- 21:45, 6 August 2019 diff hist +174 Mining Asteroids →Mining asteroids by Keith Henson
- 18:38, 15 July 2019 diff hist 0 N File:LaserDetail.jpg current
- 18:35, 15 July 2019 diff hist 0 N File:3GWLaser.jpg current
- 18:27, 15 July 2019 diff hist +67 design to cost →Fast links to Power Satellite topics
- 22:02, 30 December 2018 diff hist +4 design to cost →Fast links to Power Satellite topics
- 21:58, 30 December 2018 diff hist -33 design to cost →Fast links to Power Satellite topics
- 21:49, 30 December 2018 diff hist +56 N File:Oil Drum Rays of Hope with pix.doc out of date file. historical reasons only current
- 20:01, 30 December 2018 diff hist +7 Mining Asteroids →Process details
- 19:55, 30 December 2018 diff hist +156 Mining Asteroids →Bootstrapping
- 19:18, 30 December 2018 diff hist +18 Mining Asteroids →What it would cost to mine this asteroid
- 06:34, 30 December 2018 diff hist +307 Mining Asteroids →Bootstrapping
- 05:37, 30 December 2018 diff hist -8 Mining Asteroids →What it would cost to mine this asteroid
- 05:36, 30 December 2018 diff hist +79 Mining Asteroids →What it would cost to mine this asteroid
- 00:32, 4 November 2018 diff hist +188 design to cost →Power Point
- 20:05, 25 January 2018 diff hist +391 design to cost →Other links
- 23:24, 24 January 2018 diff hist +106 m design to cost
- 18:56, 27 December 2017 diff hist -1 m Mining Asteroids →Process details: fixed typos
- 18:24, 20 October 2017 diff hist -6 design to cost →Power Point
- 18:22, 20 October 2017 diff hist +6 design to cost →Power Point
- 17:21, 20 October 2017 diff hist +4 design to cost →Power Point
- 17:19, 20 October 2017 diff hist -85 design to cost →Power Point
- 17:17, 20 October 2017 diff hist 0 N File:REL2.pdf current
- 23:52, 4 June 2017 diff hist +1 design to cost →Fast links to Power Satellite topics
- 23:48, 4 June 2017 diff hist +1 design to cost →Power Point
- 23:48, 4 June 2017 diff hist +7 design to cost →Video Animations
- 18:27, 3 June 2017 diff hist +4 design to cost
- 18:24, 3 June 2017 diff hist +34 design to cost
- 18:22, 3 June 2017 diff hist 0 N File:Skylon and StratoLaunch.jpg current
- 22:57, 29 November 2016 diff hist +81 design to cost →Power Point
- 21:53, 29 November 2016 diff hist +31 N File:SMF 1975 Closed Ecosystems Chapter.pdf Space Farm paper from long ago. current
- 21:45, 29 November 2016 diff hist 0 design to cost →Fast links to Power Satellite topics
- 17:33, 26 November 2016 diff hist +28 design to cost →Other links
- 17:31, 26 November 2016 diff hist 0 design to cost →Power Point
- 17:30, 26 November 2016 diff hist +4 design to cost →Power Point
- 17:29, 26 November 2016 diff hist +43 design to cost
- 16:41, 26 November 2016 diff hist +869 design to cost
- 07:31, 28 September 2016 diff hist +138 design to cost
- 02:19, 23 July 2016 diff hist +3 design to cost
- 01:59, 17 July 2016 diff hist -6 design to cost
- 05:29, 13 July 2016 diff hist +883 design to cost added links
- 19:13, 6 July 2016 diff hist +38 m design to cost
- 19:40, 1 July 2016 diff hist +659 design to cost new stuff
- 06:35, 16 March 2016 diff hist +127 design to cost
- 15:39, 4 July 2015 diff hist +1,098 design to cost update
- 15:29, 7 May 2015 diff hist +1 Mining Asteroids →Process details: updates
- 15:23, 7 May 2015 diff hist +120 Mining Asteroids →Bootstrapping
- 15:17, 7 May 2015 diff hist +64 Mining Asteroids →What it would cost to mine this asteroid
- 15:40, 15 April 2014 diff hist +2 design to cost
- 15:38, 15 April 2014 diff hist +1 design to cost update
- 20:04, 21 March 2014 diff hist +1,009 design to cost
- 06:43, 10 March 2014 diff hist +1 UpLift
- 06:43, 10 March 2014 diff hist -9 UpLift
- 06:41, 10 March 2014 diff hist +58,007 UpLift hanging this out of date story here for a bit
- 05:10, 10 March 2014 diff hist +959 N UpLift Created page with "=UpLift: A story of Space Elevators and Power Satellites= ==plus a bit on Mining Asteroids== By Keith Henson (Draft March 9, 2014 ~10,000 words) '''June 2025''' ==The cave..."
- 03:31, 10 March 2014 diff hist +8 N File:Uplift after hemingway.doc MsUpload current
- 18:28, 9 January 2014 diff hist +175 m Mining Asteroids added ref
- 22:28, 2 January 2014 diff hist +789 design to cost added more about laser beam problems
- 16:30, 24 December 2013 diff hist +88 design to cost
- 05:21, 21 December 2013 diff hist +49 N File:Solar PV Experience.jpg Price per watt vs cumulative installations of PV. current
- 04:14, 5 December 2013 diff hist +13 design to cost added/updated material, added Laser Skylon pix.
- 04:04, 5 December 2013 diff hist +23 design to cost
- 03:58, 5 December 2013 diff hist +709 design to cost
- 18:50, 24 September 2013 diff hist +3 m Talk:dollar a gallon gasoline →Contact data for Keith Henson current
- 19:50, 10 September 2013 diff hist +52 N File:Power Satellite business model with CO2.xls Excel model of power satellite business by quarters. current
- 21:47, 2 September 2013 diff hist +296 N File:SkylonLaser.jpg Laser powered modified Skylon near the end of acceleration to LEO on hydrogen heated by 3 GW of lasers located in GEO. The exhaust velocity of the hot hydrogen is close to 7.5 km/s. Base artwork courtesy of Reaction Engines, Ltd., modified by Barbar... current
- 17:45, 12 April 2013 diff hist +8 m Mining Asteroids →Process details
- 17:02, 29 June 2012 diff hist +87 Laser propulsion current
- 16:04, 29 June 2012 diff hist +9 Laser propulsion
- 15:59, 29 June 2012 diff hist +22 Laser propulsion
- 15:57, 29 June 2012 diff hist +41 N File:Power sat PandL.jpg First cut power sat P&L, laser propulsion current
- 15:48, 29 June 2012 diff hist +165 N File:Laser propulsion business model.xls First cut at a business model using lasers in space to provide propulsion for LEO to GEO and then end of air breathing to LEO Produced by Keith Henson June 29, 2012 current
- 15:44, 29 June 2012 diff hist +1,454 N Laser propulsion Created page with "Laser propulsion to build power sats, first cut. This rough model uses bootstrapping to build 3.5 GW of propulsion lasers powered from a power sat built only to power the las..."
- 19:46, 10 June 2012 diff hist +558 Nm Special:Badtitle/NS90:Talk:Mining Asteroids/Rubble Pile Variable for Mining Asteroids/reply Reply to Rubble Pile Variable for Mining Asteroids current
- 12:55, 9 June 2012 diff hist +1 Mining Asteroids
- 12:52, 9 June 2012 diff hist +14,712 N Mining Asteroids Created page with "=Mining asteroids by Keith Henson= June 9 Draft temp post as a wiki for comment! ''This article provides a rough analysis of mining an asteroid for gold and other high value..."
- 22:42, 21 May 2012 diff hist +96 Penny a kWh →Thermal alternative to PV current
- 22:37, 21 May 2012 diff hist +393 Penny a kWh →Cost of Space Based Solar Power
- 17:15, 8 March 2012 diff hist +387 Penny a kWh →Cost of Space Based Solar Power
- 23:07, 18 October 2011 diff hist +421 SBSP--specific power current
- 03:32, 18 October 2011 diff hist +725 N SBSP--specific power Created page with "The specific power in kg/kW for a power satellite is a critical number for evaluating the economics of this method of power production. Multiplied by the cost per kg for the lif..."
- 13:59, 21 September 2011 diff hist +56 Beamed energy propulsion →Numerical investigation of a Gausian power beam heating a surface cooled with hydrogen and re-radiating
- 15:10, 15 September 2011 diff hist 0 File:Re radiation gausian input.xls uploaded a new version of "File:Re radiation gausian input.xls": Error in computation of Reynolds number current
- 21:57, 29 August 2011 diff hist +32 Penny a kWh →Cost of power sat energy
- 20:33, 29 August 2011 diff hist +88 dollar a gallon gasoline →Carbon neutral?
- 20:29, 29 August 2011 diff hist +53 dollar a gallon gasoline →Cost
- 20:19, 29 August 2011 diff hist +27 dollar a gallon gasoline →Making synthetic hydrocarbons
- 20:18, 29 August 2011 diff hist +128 dollar a gallon gasoline →Making synthetic hydrocarbons
- 20:03, 29 August 2011 diff hist +24 dollar a gallon gasoline →Why gasoline?
- 20:01, 29 August 2011 diff hist -35 dollar a gallon gasoline →Size of the energy problem
- 14:39, 25 August 2011 diff hist +94 Beamed energy propulsion →Numerical investigation of a Gausian power beam heating a surface cooled with hydrogen and re-radiating
- 14:36, 25 August 2011 diff hist +104 Beamed energy propulsion →Numerical investigation of a Gausian power beam heating a surface cooled with hydrogen and re-radiating
- 03:03, 25 August 2011 diff hist +26 Beamed energy propulsion →Numerical investigation of a Gausian power beam heating a surface cooled with hydrogen and re-radiating
- 02:49, 25 August 2011 diff hist -5 Beamed energy propulsion →Numerical investigation of a Gausian power beam heating a surface cooled with hydrogen and re-radiating
- 02:45, 25 August 2011 diff hist +26 Beamed energy propulsion →Numerical investigation of a Gausian power beam heating a surface cooled with hydrogen and re-radiating
- 14:54, 24 August 2011 diff hist +53 N File:Heater.jpg Output of model, gausian heating of flowing hydrogen. current
- 14:08, 24 August 2011 diff hist +25 Beamed energy propulsion →Numerical investigation of a Gausian power beam heating a surface cooled with hydrogen and re-radiating
- 14:06, 24 August 2011 diff hist +20 Beamed energy propulsion →Numerical investigation of a Gausian power beam heating a surface cooled with hydrogen and re-radiating
- 16:06, 17 August 2011 diff hist -12 Beamed energy propulsion →Numerical investigation of a Gausian power beam heating a surface cooled with hydrogen and re-radiating
- 15:49, 17 August 2011 diff hist +57 N File:Re radiation gausian input.xls Hydrogen heater with gausian heating and flowing hydrogen
- 19:00, 16 August 2011 diff hist +74 Beamed energy propulsion
- 18:27, 16 August 2011 diff hist +2,733 N Beamed energy propulsion Created page with "The two big names in the field are Jordin Kare and Kevin Parkin. My contributions are usually about fitting beamed energy propulsion into the larger picture of power satellites...."
- 16:17, 22 July 2011 diff hist +70 Space radiator current
- 16:11, 22 July 2011 diff hist +302 Space radiator
- 16:04, 22 July 2011 diff hist +45 N Space radiator Created page with "Trying an upload here: Space_Radiator.jpg"
- 16:01, 22 July 2011 diff hist +142 N File:Space Radiator.jpg Collector plus radiator area per kW as a function of radiator temperature. Created by Keith Henson and posted under creative commons license. current
- 23:05, 24 June 2011 diff hist +110 N File:Exhaust velocity vs cost.pdf Based on a calculation I ran of the cost per kg to GEO vs the exhaust velocity for a Skylon. Data on request. current
- 12:34, 15 March 2011 diff hist +966 Hundred dollars a kg →Second approach current
- 12:25, 15 March 2011 diff hist -1 Hundred dollars a kg →First method
- 12:18, 15 March 2011 diff hist -13 Hundred dollars a kg →Cost reduction
- 12:16, 15 March 2011 diff hist -17 Hundred dollars a kg →Rockets and lasers—pop up and push
- 12:11, 15 March 2011 diff hist +1,459 Hundred dollars a kg →Cost reduction
- 19:55, 25 September 2009 diff hist +120 design to cost
- 05:23, 20 September 2009 diff hist +188 dollar a gallon gasoline →Carbon neutral?
- 03:23, 31 August 2009 diff hist +25 Hundred dollars a kg →How much lifted to GEO
- 17:26, 29 June 2009 diff hist +70 design to cost
- 02:38, 12 May 2009 diff hist +24 Texas Lasers current
- 15:17, 10 May 2009 diff hist +575 N Texas Lasers New page: The rocket launch site need to be on the equator with a long stretch of water to the east. For the western hemisphere, the only choice is launching from Brazil. The lasers should be loca...
- 17:10, 24 April 2009 diff hist -22 Hundred dollars a kg →Rockets or lasers?
- 17:07, 24 April 2009 diff hist +16 N File:Rocket mass ratio versus delta-v.png mass ratio graph current
- 02:34, 21 April 2009 diff hist +5 Hundred dollars a kg →Rockets and lasers—pop up and push
- 02:32, 21 April 2009 diff hist -685 Hundred dollars a kg →Rockets and lasers
- 02:11, 11 April 2009 diff hist +8 Hundred dollars a kg →Rockets and lasers
- 21:46, 27 March 2009 diff hist +2,744 Hundred dollars a kg →Rockets and lasers: draft stuff
- 00:15, 2 January 2009 diff hist +7 dollar a gallon gasoline →Size of the problem
- 23:29, 1 January 2009 diff hist +3 dollar a gallon gasoline
- 23:24, 1 January 2009 diff hist +1 dollar a gallon gasoline
- 22:42, 1 January 2009 diff hist -96 dollar a gallon gasoline →Cost
- 22:35, 1 January 2009 diff hist +61 dollar a gallon gasoline →Making synthetic hydrocarbons
- 22:22, 1 January 2009 diff hist +91 dollar a gallon gasoline →Making synthetic hydrocarbons
- 22:15, 1 January 2009 diff hist +362 dollar a gallon gasoline →Cost
- 22:03, 1 January 2009 diff hist +7 dollar a gallon gasoline →Why gasoline?
- 21:40, 1 January 2009 diff hist -8 solar power satellite/Henson-Daniel
- 06:18, 9 December 2008 diff hist +234 Hundred dollars a kg →Cost reduction
- 22:54, 25 November 2008 diff hist +129 Miller's method →International provisions
- 23:02, 22 November 2008 diff hist +12 dollar a gallon gasoline →Carbon neutral?
- 22:59, 22 November 2008 diff hist +4 Hundred dollars a kg →Other low cost ways to GEO
- 21:56, 18 November 2008 diff hist +5 Hundred dollars a kg →Other low cost ways to GEO
- 19:22, 15 October 2008 diff hist +363 Power Sats--PV current
- 05:45, 15 October 2008 diff hist +288 Power Sats--PV
- 20:30, 15 September 2008 diff hist +3,091 N Hundred dollars a kg/Note 1 New page: In theory, with a high efficiency device such as a moving-cable space elevator, the electrical energy to lift a kg from the surface of the earth to GEO is only14.75 kWh/kg. That is under ...
- 19:48, 15 September 2008 diff hist +44 Hundred dollars a kg →Cost reduction
- 18:52, 15 September 2008 diff hist -4 Hundred dollars a kg →How much lifted to GEO
- 18:49, 15 September 2008 diff hist +2 dollar a gallon gasoline →Cost
- 18:45, 15 September 2008 diff hist +744 Talk:dollar a gallon gasoline →Contact data for Keith Henson