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248 Exploration thumb thumb thumb thumb thumb
CHECKING A ROPE
A caving rope should be retired after 100 days of use.
The British Mountaineering Council
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 5.2 out of 10 based on 15 reviews
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504 Fuel thumb thumb thumb thumb thumb
CREATING STEAM POWER
For creating steam, one ton of coal is equivalent to two cords of wood.
John Fischer, volunteer fireman, Joliet, Montana
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 5.3 out of 10 based on 17 reviews
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760 Drinking thumb thumb thumb thumb
PREDICTING THE EFFECTS OF ALCOHOL
One drink for a woman is the same as two for a man.
Dr. Charles S. Lieber, Mount Sinai School of Medicine, in The New York Times
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 3.6 out of 10 based on 23 reviews
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1016 Climbing thumb thumb thumb thumb thumb
CLIMBING WITHOUT SUPPLEMENTARY OXYGEN
I need one week to acclimate my body for climbing a 5,000-meter mountain without oxygen, two weeks for a 6,000-meter mountain, three for 7,000 meters, and at least four weeks for an 8,000-meter mountain.
Reinhold Messner, mountaineer, via Henning Pape, West Berlin, Germany
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 4.8 out of 10 based on 15 reviews
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1272 Horses thumb thumb thumb thumb thumb
TAKING CARE OF A HORSE
Shoe a horse when hoof wear exceeds hoof growth.
Frank Turley, director, Turley Forge Blacksmithing School, Santa Fe, New Mexico
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 4.9 out of 10 based on 17 reviews
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1528 Jobs thumb thumb thumb thumb thumb
RECRUITING AT COLLEGES
Company recruiters should aim to hire at least one student for every school they visit. Not hiring anyone virtually guarantees a thinner response at the school next year.
William J. McBurney Jr., management consultant, New York, New York
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 5.0 out of 10 based on 16 reviews
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1784 Travel thumb thumb thumb thumb thumb thumb
GETTING SICK ON A LUXURY SHIP
The more expensive your cabin on a cruise, the greater the possibility that you will get seasick. This is because the expensive cabins are found forward, high, and with outside bulkhead exposure. This subjects them to more rolling and pitching than the less expensive cabins located near the ship's center of gravity.
Gerry M. Flick M.D., Ship's Surgeon, S.S. Constitution off Hawaii
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 5.5 out of 10 based on 16 reviews
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2040 Lawyers thumb thumb thumb thumb thumb
COURT TRIALS
Anytime a district attorney brings a defendant to trial, he or she is convinced that the defendant is guilty, even though proving it may be impossible.
Anonymous lawyer, Chicago, Illinois
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 5.4 out of 10 based on 15 reviews
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2296 Joker thumb thumb thumb thumb thumb thumb
USING DYNAMITE
Wait at least an hour before investigating a charge of dynamite that didn't go off.
Joe Kaiser, Covington, Kentucky
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 5.5 out of 10 based on 16 reviews
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2552 Time thumb thumb thumb thumb thumb
EMMON'S RULE OF BREATHING
When you're relaxed, 12 breaths is approximately equal to 1 minute.
Emmon Bodfish, Oakland, California
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 4.6 out of 10 based on 17 reviews
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2808 Health thumb thumb thumb thumb thumb thumb
ESTIMATING CAFFEINE CONTENT
54 M&Ms equal one Vivarin in terms of caffeine content.
Lynne Boysen, Student, Cedar Rapids, IA, USA
(LR) Legacy Rule of Thumb from previously published collections
(EC) Collected by The Editors
Current Rating: 6.4 out of 10 based on 16 reviews
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