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Water filter comparison for survival and emergency use: Sawyer Squeeze vs LifeStraw vs Katadyn BeFree vs gravity filters. Log reduction ratings for bacteria and protozoa, flow rates, filter life in gallons, and failure modes. Which filter works for each scenario.
Compass navigation fundamentals: magnetic versus true north, declination tables and correction procedure, taking and following a bearing, back azimuth calculation, and common compass errors. Specific procedures for the Silva Ranger and Suunto baseplate compass.
Reading topographic maps for navigation: USGS map scales and series, contour interval interpretation, the 10 terrain features (hill, ridge, valley, saddle, depression, cliff, cut, fill, draw, spur), drainage patterns, and the complete USGS symbol legend for trails, structures, and water.
Land navigation without GPS using topographic maps and compass: UTM grid reading, contour line interpretation, declination correction, taking a bearing, resection by two-bearing fix, and pace counting for distance. Specific techniques for moving to a destination without trails.
Build a permanent rocket stove from 16 standard cinder blocks: L-shaped combustion chamber dimensions, fuel shelf placement, riser height, and measured BTU output versus open fire and propane. Mortar options and fire-setting procedure included.
A 72-hour no-cook emergency meal plan at 2,000 kcal/day using only shelf-stable foods: calorie breakdown per meal, specific food items with quantities, storage weight and volume, and cost per person per day. No stove, no water required for most items.
Natural cordage from dogbane, stinging nettle, yucca, and cattail using the reverse-wrap technique. Plant selection by North American region, fiber preparation steps, wetting for consistency, and breaking strength data compared to paracord.
Seven emergency cooking methods ranked by fuel efficiency, cost, and reliability: rocket stove, solar parabolic cooker, Kelly kettle, propane camp stove, alcohol stove, open fire, and retained-heat cooker. BTU output, fuel consumption rates, and cost per meal included.
Field knife sharpening with a whetstone: 20-degree angle technique, coarse-to-fine grit progression, burr formation and removal, and leather strop finishing. Includes the paper test and shaving test to confirm an edge ready for use.
Primitive technology for survival: natural cordage from dogbane, stinging nettle, and inner bark using the reverse-wrap technique; birch bark containers and baskets; clay waterproofing for containers and shelters; and basic flint knapping for cutting edges. Tensile strength comparisons included.
