Dictionary of Explosives

In Short

This volume serves as a specialized reference work, documenting the chemical makeup of hundreds of explosives prevalent in the early 1900s. It focuses primarily on proprietary mixtures used in mining, quarrying, and military applications, categorizing them by function—such as high explosives, propellants for shotguns, and blasting agents for coal mines. By cataloging the specific ingredients—from nitroglycerine and ammonium nitrate to wood meal and various metallic salts—it captures a snapshot of a volatile industry at a time when rapid innovation necessitated constant updates to safety standards and chemical permits.

The Story

The narrative of this work is one of industrial regulation and chemical precision. It begins in the shadow of the Great War, a period that accelerated the development of new, more efficient explosive compounds. The author establishes a clear purpose: to distill the vast, often cluttered landscape of explosive patents into a manageable, accurate manual. He explicitly rejects the exhaustive, inclusionist approach of nineteenth-century predecessors, choosing instead to focus on the substances that actually saw commercial or military use. This shift reflects the necessity of standardization in an era where new materials, such as various nitrocelluloses and aromatic nitro-compounds, were fundamentally changing the capabilities of both civilian blasting and modern weaponry.

The text moves systematically through the chemical architecture of these substances. It explains the foundational processes, such as the nitration of cellulose, and then branches out into detailed, entry-by-entry accounts of branded explosives. These entries are rarely static; they frequently show the evolution of a product as it is forced to adapt to stricter government regulations, particularly in the United Kingdom. For example, an explosive like Abelite or Arkite is often introduced with an original formula, only to be followed by a "No. 2" or a revised version after failed tests or updated safety requirements. The author chronicles the rise and fall of these "permitted" lists, tracking how the addition of substances like sodium chloride or ammonium oxalate was used to temper the violence of an explosion, making it safer for the methane-heavy environment of a coal mine.

As the book progresses, the focus shifts to the global nature of this industry. It highlights how German, American, and Belgian formulas often mirrored one another, occasionally diverging based on local resource availability or specific industrial needs. The reader sees the emergence of standardized nomenclature, where terms like "T.N.T." or "Cordite" become the bedrock of the trade. The arc of the book concludes with expansive, tabulated cross-references that serve as a map of the era’s chemical dependencies. By listing ingredients—from charcoal and sulfur to complex nitro-bodies—and linking them back to every proprietary name in the dictionary, the author provides a final view of a world built upon a common foundation of volatile chemistry. The tone remains strictly observational, ending not with a conclusion, but with the raw data of a global industrial apparatus that had become inextricably linked to the science of controlled detonation.

How It Unfolds

The mandate for precision The author explains the shift away from the encyclopedic, indiscriminate cataloging of the past. He argues that modern, practical utility requires a narrower focus on active, proprietary materials rather than abandoned patents.

The chemical foundation Before addressing specific brands, the book outlines the chemistry of base components like nitrocotton and wood cellulose. This sets the technical stage for understanding why specific stabilizers or oxidizers are added to later mixtures.

The cycle of regulation The core of the book tracks the life cycle of various mining explosives as they move onto and off of the "Permitted List." Each entry demonstrates the constant feedback loop between laboratory innovation and the harsh reality of government safety testing.

The global landscape The narrative expands to include the distinct approaches taken by manufacturers in Germany, the United States, and Belgium. It illustrates how different chemical philosophies were applied to common problems, such as preventing the freezing of nitroglycerine or reducing the flash of a propellant.

The final synthesis The book concludes with extensive indexing that categorizes every explosive by its constituent chemicals. This structure turns the preceding entries into a searchable database, revealing the fundamental shared ingredients of an entire industry.

The People

The central figures in this book are not individuals, but the manufacturers and government inspectors who defined the chemical boundaries of the age. Companies like Kynoch, Ltd., the Lancashire Explosives Co., and the Du Pont Co. act as the protagonists of industrial progress. They are consistently driven by the need to balance power with safety, and their efforts are measured against the stern, objective standards of the British Home Office and similar international bodies.

These firms strive to maintain market relevance by refining their formulas, often under the pressure of repeal. They are constantly hindered by the volatile nature of their own products—the inherent danger of detonation or the corrosive effects on weapon barrels. The inspector, serving as the antagonist or the arbiter of legitimacy, forces these companies to iterate. When a formula fails a Rotherham Test, the company must return to the laboratory to introduce cooling agents like sodium chloride or ammonium oxalate. Through this process, the manufacturers undergo a transformation: they evolve from producers of raw, dangerous mixtures into engineers of highly specific, stable, and regulated chemical compounds. Their success is measured by the "limit charge" and the "swing of the ballistic pendulum," metrics that define their survival in a highly competitive, government-monitored landscape.

In Its Own Voice

The variety of cellulose most used for this purpose is cotton, and the product obtained from it is frequently called nitrocotton, three special varieties of which are collodion cotton, pyrocollodion and guncotton.

The author explains the origin of the primary materials used in the manufacture of high-explosive compounds.

In consequence of the severe erosion of the guns experienced during the South African War the proportions were altered, some of the nitroglycerine being replaced by guncotton.

This passage illustrates how the failures of military hardware directly influenced the chemical reformulation of the standard British propellant, Cordite.

What It's Really About

The book is an argument for the necessity of industrial standardization through rigorous, empirical testing. It poses the question of how a society can safely harness the immense destructive potential of chemistry for the prosaic needs of coal extraction and the existential requirements of warfare. The underlying theme is the taming of volatility; every formula listed is a compromise between the raw, explosive energy required to shatter rock and the chemical buffers needed to prevent premature or catastrophic ignition. It captures the tension of an era where scientific progress moved at a pace that often outran the ability to safely manage the products of that progress, necessitating a constant, vigilant re-evaluation of every chemical agent in the field.

Why Read It Today

This work is an essential read for those interested in the history of industrial chemistry, the mechanics of the Great War, or the evolution of mining technology. It offers a rare, granular view of the "chemical mindset" of the early twentieth century. Reading it feels like stepping into the quiet, meticulous atmosphere of an ordnance laboratory; the prose is clinical, devoid of narrative flair, and entirely focused on the composition of matter.

Readers should be prepared for a text that is essentially a catalog; it lacks the narrative arc of a novel and contains technical data that will be dry to the casual observer. The period attitudes are present in the author’s matter-of-fact discussion of explosives designed specifically for military destruction, reflecting a time when such development was seen as a purely administrative task of national defense. However, for those who value the preservation of historical technical knowledge, the book is a treasure. It stays with you as a reminder of the sheer, often forgotten complexity of the industrial world, and of the precarious balance that early modern science struck between the utility of power and the safety of the laborer. It is a precise, unsentimental document of a world in the midst of a violent, chemical transformation.